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  author: QuantStack
  url: https://quantstack.net
  type_title: All rights reserved
  - url: https://medium.com/@QuantStack/quantstack-2021-in-review-fe5eac2e0f6d
    title: "QuantStack: 2021 in review"
    image: https://miro.medium.com/max/5000/1*sTrv_3hnvCHQdh_6SOYVIg.png
    summary: This was a crazy year of innovation for the open-source team at QuantStack. From JupyterLab to the packaging ecosystem and high-performance computing, we made some major strides in all areas, while almost doubling the size of the team.
    date: December 18th, 2021
    authors: Sylvain Corlay     
  - url: https://blog.jupyter.org/jupyter-games-cda20dc15a21
    title: Jupyter Games
    image: https://miro.medium.com/max/4854/1*gXbeqCDvKyaRySdAX6SnKg.png
    summary: Making their own tiny video games can be a great way for kids to learn programming in a playful matter. While Jupyter is widely used as a scientific and educational tool, Jupyter is seldom used as a…
    date: December 14th, 2021
    authors: Thorsten Beier
  - url: https://blog.jupyter.org/need-for-speed-voil%C3%A0-edition-a9e1300ab3b2
    title: "Need for speed: Voilà edition"
    image: https://miro.medium.com/max/2000/1*gSWxQGu60SG5DdH8MIzCjw.png
    summary: Voilà turns Jupyter notebooks into standalone applications without requiring any modification to the content. You want to share your content with non-technical readers? Just call Voilà with the…
    date: December 10th, 2021
    authors: Duc Trung Le
  - url: https://adelsalle.medium.com/towards-a-more-secure-conda-ecosystem-5ce65a27d7d5
    title: Towards a more secure conda ecosystem
    image: https://miro.medium.com/max/2000/1*-dT0h3rEi07pzgl_wnkj_g.png
    summary: Supply chain security is crucial to the overall security of package managers, which are a major attack vector of information systems. Today, we are pleased to announce that mamba has gained the…
    date: November 16th, 2021
    authors: Adrien Delsalle
  - url: https://johan-mabille.medium.com/toward-a-faster-and-thinner-xsimd-9e4eef41bc17
    title: Toward a faster and thinner xsimd
    image: https://miro.medium.com/max/1094/1*5jX4Eemb2CsUkRo3V2FGow.png
    summary: xsimd, the SIMD library by QuantStack, got more and more adoption in recent years. While it helped improve the library, adoption also brought new requirements. Among them was the abitility to...
    date: October 29th, 2021
    authors: Serge Guelton, Johan Mabille
  - url: https://blog.jupyter.org/xeus-lite-379e96bb199d
    title: Xeus-Lite
    image: https://miro.medium.com/max/4020/1*PUlJi6czJovO90t-Dsgt5g.png
    summary: JupyterLite is a JupyterLab distribution that runs entirely in the web browser, backed by in-browser language kernels. Xeus is C++ library for writing Jupyter kernels. In this blogpost we show how…
    date: October 25th, 2021
    authors: Thorsten Beier
  - url: https://wolfv.medium.com/the-mamba-project-and-the-czi-grant-ec88fb27c25
    title: The mamba project and the CZI grant
    image: https://miro.medium.com/max/2000/1*6hKli3Nr3p6eX3TN5hRaSQ.png
    summary: "For those who don't know yet: mamba is a fast, cross-platform & non-language-specific package manager widely used in the scientific space. Mamba works with conda -packages and works great in tandem…"
    date: October 19th, 2021
    authors: Wolf Vollprecht
  - url: https://blog.jupyter.org/looking-at-notebooks-from-a-new-perspective-bfd06797f188
    title: Looking at notebooks from a new perspective
    image: https://miro.medium.com/max/3000/1*g3OWLubcUFgVIGBfPYztJQ.png
    summary: Jupyter notebooks are a great tool for practitioners of scientific computing from the research phase of their work to the communication of their results. The interleaving of code and rich text makes…
    date: October 5th, 2021
    authors: Mariana Meireles
  - url: https://blog.jupyter.org/xeus-2-0-cb460d4daed4
    title: Xeus 2.0
    image: https://miro.medium.com/max/4800/1*kGCA9WV-Gf5tiNqqy9vTMQ.png
    summary: We have just released Xeus 2.0. This is a major release of the library. While it includes backward-incompatible changes, they are very limited and upgrading your kernels should be relatively easy… 
    date: September 28th, 2021
    authors: Johan Mabille, Sylvain Corlay
  - url: https://blog.jupyter.org/from-jupyter-to-the-moon-2e432df402c8
    title: From Jupyter to the Moon
    image: https://miro.medium.com/max/2750/1*Or2bu8twFwywgACqLOE9AA.png
    summary: A key principle in Jupyter’s design is language agnosticism, and one of the main extension points of the Jupyter ecosystem is the kernel, the part of the architecture responsible for executing the…
    date: September 24th, 2021
    authors: Thorsten Beier
  - url: https://blog.jupyter.org/jupyterlite-jupyter-%EF%B8%8F-webassembly-%EF%B8%8F-python-f6e2e41ab3fa
    title: Jupyter ️❤️ WebAssembly ❤️ Python
    image: https://miro.medium.com/max/1024/1*CMvcTaLSAD5A-WHCtnIFwA.png
    summary: JupyterLite is a JupyterLab distribution that runs entirely in the web browser, backed by in-browser language kernels. JupyterLite is a reboot of several attempts at making a full static Jupyter…
    date: July 13th, 2021
    authors: Jeremy Tuloup
  - url: https://wolfv.medium.com/mamba-0-15-0-475d1dca0418
    title: Mamba 0.15.0
    image: https://miro.medium.com/max/2000/1*neAjO4lTmq4TIZTmMGkKNg.png
    summary: We’ve just dropped one of the biggest releases of mamba (the fast conda package manager)— along with some nice improvements in libsolv! This is a quick update on some new and improved features in…
    date: July 9th, 2021
    authors: Wolf Vollprecht, Adrien Delsalle
  - url: https://www.polytechnique.edu/fondation/content/le-calcul-haute-performance-au-service-de-l%E2%80%99innovation
    title: Le calcul haute performance au service de l'innovation (in French)
    image: https://xpuissancevous.fr/assets/frontend/images/header/logo_share.png
    summary: Led by Professor Marc Massot (Center for Applied Mathematics), the HPC@Maths initiative aims at developing a strong expertise in high-performance computing at École Polytechnique. This project is supported by the X Foundation, and by QuantStack.
    date: June 18th, 2021
    authors: Fondation École Polytechnique
  - url: https://blog.jupyter.org/how-we-made-jupyter-notebooks-collaborative-with-yjs-b8dff6a9d8af
    title: How we made Jupyter notebooks collaborative with Yjs
    image: https://miro.medium.com/max/1600/0*HvwrxmA_sBtU0SaO
    summary: Collaborative editing — à la Google Docs — is a feature that you still rarely find in applications. One of the few good things that came out of this pandemic is that more people seem to care about…
    date: June 12th, 2021
    authors: Kevin Jahns
  - url: https://blog.jupyter.org/retrolab-a-jupyterlab-distribution-with-a-retro-look-and-feel-8096b8b223d0
    title: RetroLab — A JupyterLab distribution with a retro look and feel
    image: https://miro.medium.com/max/3840/1*n9MydI9CDW9vlav1gMlo0Q.png
    summary: RetroLab is an alternative JupyterLab distribution, built from the ground-up, providing a notebook interface with a retro look and feel. Currently at version 3.0, JupyterLab provides an advanced…
    date: May 27th, 2021
    authors: Jeremy Tuloup
  - url: https://adelsalle.medium.com/rhumba-the-fast-r-distribution-is-available-on-windows-fa975b2aefa2
    title: Rhumba, the fast R distribution is available on Windows
    image: https://miro.medium.com/max/700/1*23wOYejHZA5dLluhyLUYhA.gif
    summary: A few months ago, Mariana Meireles created Rhumba, a fast R package manager and distribution leveraging the conda-forge initiative and the mamba library. Today, we’re happy to announce a new major…
    date: May 18th, 2021
    authors: Adrien Delsalle
  - url: https://blog.jupyter.org/enabling-the-jupyterlab-debugger-with-ipykernel-8d7248f522b0
    title: Enabling the JupyterLab Debugger with ipykernel
    image: https://miro.medium.com/max/4214/1*jSQWLvCYoV-L-kp_lTkRKg.gif
    summary: JupyterLab 3.0 includes a visual debugger that allows to interactively set breakpoints, step into functions, and inspect variables with any Jupyter kernel that implements the Jupyter debugger…
    date: May 13th, 2021
    authors: Sylvain Corlay, Johan Mabille
  - url: https://medium.com/@mari_meir/jupyter-%EF%B8%8F-%EF%B8%8F-cytoscape-e2e77be8e0f9
    title: Jupyter ️❤️ Cytoscape
    image: https://miro.medium.com/max/250/1*fib_QqwBNksN4YiJiAneQg.png
    summary: Cytoscape is an open source software platform for visualizing complex networks and integrating these with any type of attribute data. While the project was started in the life sciences community, it…
    date: May 11th, 2021
    authors: Mariana Meireles
  - url: https://johan-mabille.medium.com/zarray-a-dynamic-expression-system-based-on-xtensor-ded69f37ff5e
    title: "zarray: a dynamic expression system based on xtensor"
    image: https://miro.medium.com/max/782/0*MH-GD9T19Fjn32ur.png
    summary: In this article we demonstrate how we pushed xtensor one step further, implementing a dynamic expression system on top of it. xtensor is a comprehensive C++framework for multi-dimensional array…
    date: Apr 29th, 2021
    authors: Johan Mabille
  - url: https://blog.jupyter.org/nbterm-jupyter-notebooks-in-the-terminal-6a2b55d08b70
    title: "nbterm: Jupyter Notebooks in the terminal"
    image: https://miro.medium.com/max/1120/1*jZFC3kPJqxMSUeCGd7PHxw.jpeg
    summary: Jupyter notebooks are mostly known for their web-based user interface, such as JupyterLab or the Classic Notebook. They offer a great user experience, allow for rich output rendering, provide…
    date: Apr 26th, 2021
    authors: David Brochart
  - url: https://blog.jupyter.org/abracadabra-bringing-the-magics-to-xeus-python-9d17bcfacb4
    title: Abracadabra! Bringing the Magics to Xeus-Python
    image: https://miro.medium.com/max/1120/1*PTiGVyDsazc_ziz6Bk4EnA.gif
    summary: Last year, we set ourselves to implement a visual debugger for JupyterLab. This endeavor required major developments in the JupyterLab…
    date: Feb 18th, 2021
    authors: Martin Renou
  - url: https://medium.com/robostack/cross-platform-conda-packages-for-ros-fa1974fd1de3
    title: Cross-platform Conda Packages for ROS
    image: https://miro.medium.com/max/2000/0*CWMpP2kGWulIQeHf.jpg
    summary: 2020 has been a busy year for the RoboStack project. We collaboratively published ros-noetic on four platforms (Windows, macOS, Linux x64 and ARM64) and revamped how ROS packages can be released on…
    date: February 16th, 2021
    authors: Wolf Vollprecht, Tobias Fischer
  - url: https://blog.jupyter.org/genomic-data-representation-in-jupyter-c57a5bb518d6
    title: Genomic Data representation in Jupyter
    image: https://miro.medium.com/max/1120/1*681fIddZAaQc8w72MmmIiw.gif
    summary: If there is one thing that recent events tell us, it is that genomics is a large source of data, and that its manipulation and understanding allow for the quick development of new drugs and…
    date: February 8th, 2021
    authors: Jean-David Harrouet
  - url: https://blog.jupyter.org/an-sql-solution-for-jupyter-ef4a00a0d925?postPublishedType=initial
    title: An SQL Solution for Jupyter
    image: https://miro.medium.com/max/992/1*tbfa_AWoqb-yB1Tk6Uq3ng.png
    summary: A few months ago we released xeus-sqlite, a Jupyter kernel that allows users to make SQLite queries directly from the notebook. With the needs of the Jupyter data science community in mind we decided…
    date: February 3rd, 2021
    authors: Mariana Meireles
  - url: https://blog.jupyter.org/a-curiously-recurring-widget-library-261a65bd56fe
    title: A Curiously Recurring Widget Library
    image: https://miro.medium.com/max/1120/1*i1D4_PqaKhej-XRSKkoyBw.png
    summary: Diving into the implementation of xwidgets…
    date: January 27th, 2021
    authors: Sylvain Corlay
  - url: https://blog.jupyter.org/robotic-process-automation-with-jupyterlab-713b5630e457
    title: Robotic Process Automation with JupyterLab
    image: https://miro.medium.com/max/1120/1*3HNfLnwDpXNZ6n6HPD2lXQ.png
    summary: Robotic Process Automation (RPA) differs from classical automation tools in that the actions to automate can be developed by observing a user perform a task in a graphical user interface, across…
    date: January 18th, 2021
    authors: Martin Renou, Johan Mabille
  - url: https://blog.jupyter.org/dashboarding-with-jupyterlab-3-789fcb1a5857
    title: Dashboarding with JupyterLab 3.0
    image: https://miro.medium.com/max/2000/1*t4EW3oCIrt5FaMXUyjYPFw.gif
    summary: Project Jupyter offers a complete suite of open-source tools for the scientific computing community, reaching from the exploratory phase of a project to the presentation of the results. In this last…
    date: January 8th, 2021
    authors: Carlos Herrero, Jeremy Tuloup
  - url: https://blog.jupyter.org/jupyterlab-3-0-is-out-4f58385e25bb
    title: JupyterLab 3.0 is Released!
    image: https://miro.medium.com/max/1400/1*iZTmCAefbExeTZNJKWy4cQ.png
    summary: The 3.0 release of JupyterLab brings many new features to users and substantial improvements to the extension distribution system.
    date: January 5th, 2021
    authors: Jeremy Tuloup
  - url: https://blog.llvm.org/posts/2020-12-21-interactive-cpp-for-data-science/
    title: Interactive C++ for Data Science
    image: https://blog.llvm.org/img/cling-2020-12-21-figure3.png
    summary: This post will discuss some applications of Cling developed to support data science researchers. In particular, interactively probing data and interfaces makes complex libraries and complex data more accessible users.
    date: Dec 23, 2020
    authors: Vassil Vassilev, David Lange, Simeon Ehrig, Sylvain Corlay
  - url: https://david-brochart.medium.com/xtensor-%EF%B8%8F-zarr-4f5cf25c65e5
    title: Xtensor ❤️  Zarr
    image: https://miro.medium.com/max/2160/1*N1w2lJOA9n0HKw0Hlf0ruQ.png
    summary: A C++ implementation of the Zarr specification…
    date: Dec 15, 2020
    authors: David Brochart
  - url: https://blog.jupyter.org/a-c-backend-for-vega-lite-bd2524b247c2
    title: A C++ API for Vega-Lite
    image: https://miro.medium.com/max/700/1*UkIPGquufhYT7-S62MTECg.png
    summary: In this post, we present the first public release of XVega, a C++ library for producing Vega-Lite charts. Data science workflows differ from traditional software development in that engineers make…
    date: Dec 2, 2020
    authors: Madhur Tandon
  - url: https://blog.jupyter.org/ipygany-jupyter-into-the-third-dimension-29a97597fc33
    title: Ipygany, Jupyter into the Third Dimension
    image: https://miro.medium.com/max/1000/1*IB4Bf4aEC5RXJJ1gY1zGFw.png
    summary: From Paraview to Mayavi, there are multiple solutions for data analysis on 3D meshes on the desktop. Most of these tools provide high-level APIs that can be driven with a scripting language like…
    date: Oct 14, 2020
    authors: Martin Renou
  - url: https://medium.com/@mari_meir/rhumba-a-faster-r-distribution-d619fb93043a
    title: Rhumba, a Faster R Distribution
    image: https://miro.medium.com/max/1260/1*qNdIl4oTgd0F6JAExK7CNg.gif
    summary: CRAN is the official package manager for the R ecosystem. Unfortunately, simple operations such as creating new environments or installing packages with it can be very time-consuming due to the fact…
    date: Oct 13, 2020
    authors: Mariana Meireles
  - url: https://blog.jupyter.org/the-templating-system-of-nbconvert-6-47ea781eacd2
    title: The Templating System of Nbconvert 6
    image: https://miro.medium.com/max/1200/1*nrUKm5eexRd9ReMergNnEw.png
    summary: One of the main changes in nbconvert 6 is the refactor of the template system, which should be easier to extend and build upon. In this article, we dive into the template system, and provide a…
    date: Sep 26, 2020
    authors: Sylvain Corlay
  - url: https://medium.com/@mari_meir/memestra-a21c0c1f362
    title: Memestra!
    image: https://miro.medium.com/max/1200/1*usMYAuVljfxl9LnSPnseVg.png
    summary: Modern IDE features such as interactive debugging, linting, code formatting, and refactoring tools are now available in JupyterLab, thanks to the JupyterLab-LSP extension and the recent release of…
    date: Sep 21, 2020
    authors: Mariana Meireles
  - url: https://medium.com/@martinRenou/real-time-rendering-of-water-caustics-59cda1d74aa
    title: Real-time Rendering of Water Caustics
    image: https://miro.medium.com/max/875/1*lbqTcvsdT_5D2LT1h5bO2g.png
    summary: In this article, I present an attempt for generalizing caustics computation in real-time using WebGL and ThreeJS. The fact that it is an attempt is important, finding a solution that works well in…
    date: Aug 27, 2020
    authors: Martin Renou
  - url: https://blog.jupyter.org/jupyterlab-ros-3dc9dab7f421
    title: JupyterLab, the Cloud Robotics Command Station
    image: https://miro.medium.com/max/3200/1*zfaBPxiCzlnoNoKrVpcrIA.png
    summary: Building the next generation of robotics cloud computing using ROS and JupyterLab
    date: Aug 11, 2020
    authors: Carlos Herrero, Wolf Vollprecht
  - url: https://blog.jupyter.org/slicerjupyter-a-3d-slicer-kernel-for-interactive-publications-6f2ad829f635
    title: SlicerJupyter, a 3-D Slicer Kernel for Interactive Publications
    image: https://miro.medium.com/max/341/1*ePhHKkjqV-AW0mvDkaeurw.png
    summary: Use Jupyter and 3D Slicer kernel to implement biomedical data processing workflows in a notebook.
    date: Jul 8, 2020
    authors: Sylvain Corlay, Jean-Christophe Fillion-Robin, Mike Grauer, Andras Lasso, Matt MacCormick, Isaiah Norton, Steve Pieper, Martin Renou, Mike Sarahan
  - url: https://medium.com/@QuantStack/open-software-packaging-for-science-61cecee7fc23
    title: Open Software Packaging for Science
    image: https://raw.githubusercontent.com/TheSnakePit/design/83d7450620172e41f54e65c76f1374b52dfab8a1/mamba.svg
    summary: Modern scientific applications typically depend on a very large number of libraries written in various programming languages, ranging from Fortran to TypeScript, C, C++, Python, etc. So, we need to…
    date: Jun 19, 2020
    authors: Wolf Vollprecht, Mario Buikhuizen, Marianne Corvellec, Johan Mabille, David Brochart
  - url: https://blog.jupyter.org/a-jupyter-kernel-for-sqlite-9549c5dcf551
    title: A Jupyter Kernel for SQLite
    image: https://miro.medium.com/max/604/1*pzPTGCJVgIO10N7OwOGWKw.png
    summary: While it is well known in the Python scientific computing community, Jupyter is in fact a language-agnostic development environment. High-quality language kernels exist for the main languages of data…
    date: Jun 11, 2020
    authors: Mariana Meireles
  - url: https://blog.jupyter.org/plasma-a-learning-platform-powered-by-jupyter-1b850fcd8624
    title: PLASMA, a Learning Platform Powered by Jupyter
    image: https://miro.medium.com/max/933/0*wWdglu7KBVC08Lcc.png
    summary: Jupyter has been a great choice for education for many years. The Jupyter Notebook has become one of the most popular tools to conduct workshops, tutorials, and teach online classes. Recently we have…
    date: May 11, 2020
    authors: Jeremy Tuloup
  - url: https://blog.jupyter.org/interactive-graph-visualization-in-jupyter-with-ipycytoscape-a8828a54ab63
    title: Interactive Graph Visualization in Jupyter with IPycytoscape
    image: https://miro.medium.com/max/933/1*d9UZBB4OB3LXVm7fTHBHaw.png
    summary: The Jupyter widgets ecosystem offers a broad variety of data visualization tools for exploratory analysis in the notebook. However, we…
    date: Apr 30, 2020
    authors: Mariana Meireles
  - url: https://blog.jupyter.org/a-visual-debugger-for-jupyter-914e61716559
    title: A Visual Debuger for Jupyter
    image: https://miro.medium.com/max/933/0*9pVDg58cTz5Yezw8.gif
    summary: Most of the progress made in software projects comes from incrementalism. The ability to quickly see the outcome of an execution and iterate has been one of the main reasons for the success of…
    date: Mar 25, 2020
    authors: Jeremy Tuloup, Borys Palka, Johan Mabille, Martin Renou, Afshin Darian, Sylvain Corlay
  - url: https://blog.jupyter.org/report-on-the-jupyter-community-workshop-on-dashboarding-14f8ad9f3c0
    title: Field Report on the Jupyter Community Workshop on Dashboarding
    image: https://miro.medium.com/max/933/1*e8gJ4j2hCn4XMPagp6etOA.jpeg
    summary: From June 3rd to June 6th 2019, thirty-five developers from the Jupyter community met in Paris for a four-day workshop on dashboarding with Project Jupyter. For four days, attendees worked full time…
    date: Feb 14, 2020
    authors: Sylvain Corlay
  - url: https://medium.com/@wolfv/introducing-scikit-geometry-ae1dccaad5fd
    title: Introducing Scikit-Geometry
    image: https://miro.medium.com/max/1260/1*Ns12n2k0T3m0Hoe-5gg4kQ.png
    summary: As a robotics researcher (but also in many other fields) computations on geometric primitives are used very frequently— but it’s harder than anticipated to find the right abstractions in a nice…
    date: Jan 24, 2020
    authors: Wolf Vollprecht
  - url: https://medium.com/@johan.mabille/how-we-wrote-xtensor-8-n-iterators-7df77e3223f7
    title: How we Wrote Xtensor (Episode 8) - Iterators
    image: https://miro.medium.com/max/1260/0*mdtjNgTehPo6xzRO.png
    summary: In the previous article, we implemented the broadcasting rules so that we can compute the shape of arbitrary complex trees that involve arrays with different but compatible shapes. This is the first…
    date: Jan 7, 2020
    authors: Johan Mabille
  - url: https://medium.com/@wolfv/2019-in-review-d7d03fb0d17d
    title: 2019 in Review
    image: https://miro.medium.com/max/3600/1*64DQjEYUaRMtHA2Ou3It8w.png
    summary: This year has seen major changes in xeus and xeus-python, driven by the requirements for developing a visual debugger. We have implemented a prototype that supports the Debug Adapter Protocol from…
    date: Jan 2, 2020
    authors: Wolf Vollprecht
  - url: https://medium.com/@wolfv/robot-development-with-jupyter-ddae16d4e688
    title: Robot Development with Jupyter
    image: https://miro.medium.com/max/1260/1*rqyB9qBQUlonff3PR9YuvA.png
    summary: Jupyter and Voilà are two popular packages in the data science ecosystem. But the Jupyter plugins jupyter-ros and jupyter-amphion make them more interesting than ever for robotics applications. This…
    date: Dec 31, 2019
    authors: Wolf Vollprecht
  - url: https://medium.com/@johan.mabille/how-we-wrote-xtensor-7-n-broadcasting-cf37a974d029
    title: How we Wrote Xtensor (Episode 7) - Broadcasting
    image: https://miro.medium.com/max/1260/0*mdtjNgTehPo6xzRO.png
    summary: In the previous article, we implemented operator and mathematical function overloads so that we can build arbitrary complex expression trees and access their elements. Before we can assign an…
    date: Nov 24, 2019
    authors: Johan Mabille
  - url: https://blog.jupyter.org/voila-gridstack-template-8a431c2b353e
    title: Configure your Dashboards with the Voilà Gridstack Template
    image: https://miro.medium.com/max/933/1*Pl6z5oPeFixFjxMEYzEpIA.gif
    summary: Voilà is a new dashboarding solution from Jupyter ecosystem. It provides an easy-to-use tool to convert your Jupyter notebooks into standalone web applications. If you have not used it before, you…
    date: Nov 11, 2019
    authors: Bartosz Telenczuk
  - url: https://blog.jupyter.org/a-slideshow-template-for-voil%C3%A0-apps-435f67d10b4f
    title: A Slideshow template for Voilà
    image: https://miro.medium.com/max/512/1*JLepfTuigc_h1Gfy768BWg.png
    summary: Last June, QuantStack announced the first release of Voilà, a solution to turn Jupyter notebooks into standalone web applications. Voilà enforces security (preventing arbitrary code execution) while…
    date: Oct 29, 2019
    authors: Marianne Corvellec
  - url: https://medium.com/@wolfv/ros-on-conda-forge-dca6827ac4b6
    title: ROS on Conda-forge
    image: https://miro.medium.com/max/1260/1*Vs520qK74Y0O3O5BtlgB7g.png
    summary: ROS is a fantastic and very large suite of software tools for Robotics. It’s used in many applications and with great success, ranging from the hobbyist market to industrial use cases. Most people…
    date: Oct 28, 2019
    authors: Wolf Vollprecht
  - url: https://blog.jupyter.org/ipycanvas-a-python-canvas-for-jupyter-bbb51e4777f7
    title: IPycanvas, a Python Canvas for Jupyter
    image: https://miro.medium.com/max/933/1*LHrtcPJMCWVMgsvNR6tR6w.png
    summary: As you may already know, the Jupyter Notebook and JupyterLab are Browser-based applications. Browsers are incredibly powerful, they allow you to swap rich and interactive graphical interfaces…
    date: Oct 25, 2019
    authors: Martin Renou
  - url: https://blog.jupyter.org/field-report-on-the-kernel-community-workshop-a4ad73a1a718
    title: Field Report on the Kernel Community Workshop
    image: https://miro.medium.com/max/933/1*AKYqXS6qtE0k6EcTKl3BEQ.jpeg
    summary: From May 27th to May 29th, thirty developers from the Jupyter community met in Paris for a three-days workshop on the Jupyter kernel…
    date: Oct 7, 2019
    authors: Sylvain Corlay
  - url: https://medium.com/@johan.mabille/how-we-wrote-xtensor-6-n-operator-overloading-984c2e5b4171
    title: How we Wrote Xtensor (Episode 6) - Operator Overloading
    image: https://miro.medium.com/max/1260/0*lB4lCWmmeVGAfBUq.png
    summary: In the previous article, we introduced expression templates and developed the skeleton of the xfunction class, meant to represent a node of the abstract syntax tree of a tensor expression. We left…
    date: Sep 25, 2019
    authors: Johan Mabille
  - url: https://blog.jupyter.org/interactive-gis-in-jupyter-with-ipyleaflet-52f9657fa7a
    title: Interactive GIS in Jupyter with IPyleaflet
    image: https://miro.medium.com/max/667/1*YA26aVkLDM1KXjNtGu5-Hw.gif
    summary: As Jupyter grew in popularity, a broad ecosystem of visualization packages based on Jupyter widgets has been developed, bringing even more interactivity to the Jupyter world. In this article, we dive…
    date: Sep 25, 2019
    authors: Sylvain Corlay, Martin Renou
  - url: https://medium.com/@johan.mabille/how-we-wrote-xtensor-5-n-expression-templates-d07332e73d1d
    title: How we Wrote Xtensor (Episode 5) - Expression Templates
    image: https://miro.medium.com/max/506/1*s4m7A7i78pzy-swZZwHkAA.png
    summary: In the previous articles, we started to implement an N-D container, xarray, which has value semantics and provides all the methods required to access its data. The next step is to give it computation…
    date: Sep 5, 2019
    authors: Johan Mabille
  - url: https://blog.jupyter.org/building-a-calculator-jupyter-kernel-4aed5764a295
    title: Building a Calculator Jupyter Kernel
    image: https://miro.medium.com/max/933/0*h6rfGRuTgOkwonN9
    summary: In order to provide a language-agnostic scientific development environment, the Jupyter project is built upon a well-specified protocol to communicate with the Kernel, the part of the infrastructure…
    date: Jul 16, 2019
    authors: Vasavan Thiru, Thibault Lacharme
  - url: https://medium.com/@johan.mabille/how-we-wrote-xtensor-4-n-value-semantics-6baa6856d313
    title: How we Wrote Xtensor (Episode 4) - Value Semantics
    image: https://miro.medium.com/proxy/1*HsU43Jzp1vJZpX2g8XPJsg.png
    summary: xtensor is a comprehensive framework for N-D arrays processing, including an extensible expression system, lazy evaluation, and many other…
    date: Jul 16, 2019
    authors: Johan Mabille
  - url: https://blog.jupyter.org/introducing-templates-for-jupyter-widget-layouts-f72bcb35a662
    title: Introducing Templates for Jupyter Widget Layouts
    image: https://miro.medium.com/max/933/1*YQrJiSx2g6GfhkIqK24RUw.png
    summary: Notebooks come alive with Jupyter widgets, which allow users to produce interactive GUIs inline in the Jupyter notebook or JupyterLab. You can either use them to add a few interactive controls and…
    date: Jul 4, 2019
    authors: Bartosz Telenczuk
  - url: https://medium.com/@johan.mabille/how-we-wrote-xtensor-3-n-the-constructors-65a177260638
    title: How we Wrote Xtensor (Episode 3) - The Constructors
    image: https://miro.medium.com/proxy/1*HsU43Jzp1vJZpX2g8XPJsg.png
    summary: In the previous article, we detailed the implementation of a generic access operator for our N-D container. Two more things to implement before the xarray class can be used in practice are…
    date: Jun 24, 2019
    authors: Johan Mabille
  - url: https://medium.com/@johan.mabille/how-we-wrote-xtensor-2-n-access-operators-57e8e3852263
    title: How we Wrote Xtensor (Episode 2) - Access Operators
    image: https://miro.medium.com/proxy/1*HsU43Jzp1vJZpX2g8XPJsg.png
    summary: In the previous article, we started to design an N-dimensional container. We detailed the implementation of methods related to shape, strides, and memory layout. Let us now get to the access…
    date: Jun 20, 2019
    authors: Johan Mabille
  - url: https://medium.com/@johan.mabille/how-we-wrote-xtensor-1-n-n-dimensional-containers-f79f9f4966a7
    title: How we Wrote Xtensor (Episode 1) - N-Dimensional Containers
    image: https://miro.medium.com/max/900/1*HsU43Jzp1vJZpX2g8XPJsg.png
    summary: xtensor is a C++ library meant for numerical analysis with multi-dimensional array expressions. It exposes an API similar to that of NumPy…
    date: Jun 17, 2019
    authors: Johan Mabille
  - url: https://blog.jupyter.org/and-voil%C3%A0-f6a2c08a4a93
    title: And Voilà!
    image: https://miro.medium.com/max/933/1*F0IS2B1XS6NCxp0Eh7linQ.png
    summary: The goal of Project Jupyter is to improve the workflows of researchers, educators, scientists, and other practitioners of scientific computing, from the exploratory phase of their work to the…
    date: Jun 11, 2019
    authors: Sylvain Corlay, Maarten Breddels
  - url: https://medium.com/@wolfv/mamba-development-news-29e32aaa8d6c
    title: Mamba Development News
    image: https://miro.medium.com/max/1800/1*g1iLyOfddtgWnkq3irRVmA.png
    summary: "Mamba is a drop-in replacement for conda, the awesome cross-platform package manager. In our opinion, conda has one tiny problem: it’s too slow when many packages are installed, or when installing…"
    date: Jun 10, 2019
    authors: Wolf Vollprecht
  - url: https://medium.com/@wolfv/building-an-open-source-continuous-benchmark-system-717839093962
    title: Building an Open-Source Continuous Benchmark System
    image: https://miro.medium.com/max/3686/1*Oopw8DH88w_5ryddn-TIcw.png
    summary: "Concourse is a continuous integration software, and we use it for two purposes: multi-project continuous integration, and continuous benchmarking. It’s easy to setup on a low cost server, using…"
    date: May 29, 2019
    authors: Wolf Vollprecht
  - url: https://blog.jupyter.org/ros-jupyter-b7e82b5e1202
    title: ROS @ Jupyter
    image: https://miro.medium.com/max/933/1*35w3erSL2xz0mp9le6YNyg.png
    summary: Historically, the ROS (Robot Operating System) community has relied on Qt for building complex user interfaces. Nowadays, the Jupyter notebook and the ipywidgets framework offer a compelling…
    date: Apr 7, 2019
    authors: Wolf Vollprecht
  - url: https://medium.com/@wolfv/making-conda-fast-again-4da4debfb3b7
    title: Making Conda Fast Again
    image: https://miro.medium.com/max/1260/1*5gXPul2JQUjm6oe8Gt6WgQ.png
    summary: "You might have seen the announcement on Twitter: at QuantStack we’ve been working on making a prototype of a conda-compatible package manager called mamba. Conda is a great tool to distribute data…"
    date: Mar 28, 2019
    authors: Wolf Vollprecht
  - url: https://towardsdatascience.com/interactive-spreadsheets-in-jupyter-32ab6ec0f4ff
    title: Interactive spreadsheets in Jupyter
    image: https://miro.medium.com/max/3322/1*sKQkf8JV8xTIq9pxVBHGow.png
    summary: ipysheet is a new interactive widgets library that aims at implementing the core features of a good spreadsheet application and more…
    date: Mar 8, 2019
    authors: Martin Renou
  - url: https://blog.jupyter.org/a-new-python-kernel-for-jupyter-fcdf211e30a8
    title: A New Python Kernel for Jupyter
    image: https://miro.medium.com/max/604/1*YIXmS4xfX9MxQ6dHZLU8-g.png
    summary: Project Jupyter aims at providing a consistent set of tools for interactive computing workflows across multiple programming languages. Jupyter projects are popular at all stages of a research project…
    date: Jan 9, 2019
    authors: Martin Renou
  - url: https://medium.com/@johan.mabille/xframe-towards-a-c-dataframe-26e1ccde211b
    title: "Xframe: Towards a C++ Dataframe"
    image: https://miro.medium.com/max/1260/1*oIyi7fqvyjIwEw49XkMFig.png
    summary: For a very long time, the C++ programming language lacked a high-level toolset for scientific computing. Data structures such as N-dimensional arrays, data frames, are the bread and butter of the R…
    date: Jan 4, 2019
    authors: Johan Mabille
  - url: https://medium.com/@johan.mabille/designing-language-bindings-with-xtensor-f32aa0f20db
    title: Designing Language Bindings with Xtensor
    image: https://raw.githubusercontent.com/xtensor-stack/xtensor/master/docs/source/xtensor.svg
    summary: xtensor and its satellite projects make it easy to implement a feature once in C++ and expose it to the main languages of data science, such as Python, Julia and R with little extra work. Although…
    date: Nov 30, 2018
    authors: Johan Mabille
  - url: https://towardsdatascience.com/video-streaming-in-the-jupyter-notebook-635bc5809e85
    title: Video Streaming in the Jupyter Notebook
    image: https://miro.medium.com/max/1400/1*HTd5uPpq8hsVhxv0MeVfAg.gif
    summary: ipywidgets plays an essential part in the Jupyter ecosystem; it brings interactivity between user and data. Widgets are eventful Python objects that often have a visual representation in the Jupyter…
    date: Nov 19, 2018
    authors: Martin Renou
  - url: https://towardsdatascience.com/the-xtensor-vision-552dd978e9ad
    title: The Xtensor Vision
    image: https://miro.medium.com/max/3200/0*VgDZuseWa2S05e6A
    summary: Here we’re laying out a vision for the xtensor project, the n-dimensional array in the C++ language — that makes it easy to write high-performance code and bind it to the languages of data science…
    date: Nov 10, 2018
    authors: Wolf Vollprecht
  - url: https://serge-sans-paille.github.io/pythran-stories/bye-bye-boostsimd-welcome-xsimd.html
    title: Bye bye Boost.SIMD, Welcome XSimd
    image: https://raw.githubusercontent.com/xtensor-stack/xsimd/master/docs/source/xsimd.svg
    summary: Boost.simd provides a C++ abstraction of vector type, allowing for efficient vectorization of array computations. It has been (optionally) used as part of the expression template engine of Pythran for a long time, a great collaboration that led to several patches in boost.simd, and great performance for Pythran.
    date: Oct 31, 2019
    authors: Serge Guelton
  - url: https://medium.com/@QuantStack/xtensor-c-and-the-julia-challenge-643d4b119761
    title: Xtensor, C++, and the Julia Challenge
    image: https://miro.medium.com/max/1260/1*FU8d3qA5_wXxxd7Q_ZUEUQ.png
    summary: Last month, Simon Danisch launched the Julia Language Challenge, a programming challenge from a member of the Julia community to other programming languages. with high performances. This can be…
    date: Oct 24, 2018
    authors: Sylvain Corlay, Johan Mabille, Wolf Vollprecht
  - url: https://medium.com/@wolfv/the-julia-challenge-in-c-21272d36c002
    title: The Julia Challenge in C++
    image: https://raw.githubusercontent.com/JuliaLang/julia-logo-graphics/master/images/julia-logo-color.png
    summary: Recently, some folks of the Julia community were boasting about the expressiveness of the Julia programming language, compared to older languages. That’s how they started the Julia Challenge. The…
    date: Oct 12, 2018
    authors: Wolf Vollprecht
  - url: https://blog.jupyter.org/interpreted-c-for-gis-with-jupyter-ae191bc6fb8e
    title: Interpreter C++ for GIS with Jupyter
    image: https://miro.medium.com/max/933/1*FzUw4j635uJgWHZzc8_QiQ.png
    summary: The recent release of the Jupyter kernel for C++, based on the Cling interpreter enabled a number of new workflows for the users of the C++ programming language. More than a limited set of base…
    date: Apr 24, 2018
    authors: Martin Renou
  - url: https://blog.jupyter.org/authoring-custom-jupyter-widgets-2884a462e724
    title: Authoring Custom Jupyter Widgets
    image: https://miro.medium.com/max/933/1*FnkBH8yA-PfCNCxXA2PNIw.gif
    summary: Jupyter interactive widgets enhance the notebook experience by allowing users to create graphical user interfaces. They enable richer interaction with the data and computing resources. While the base…
    date: Mar 5, 2018
    authors: Olivier Borderies, Olivier Coudray, Pierre Marion
  - url: https://blog.jupyter.org/jupyter-receives-the-acm-software-system-award-d433b0dfe3a2
    title: Jupyter Receives the ACM Software System Award
    image: https://miro.medium.com/max/1333/1*4gB92wu3PVYsKabkNCkgjg.png
    summary: It is our pleasure to announce that Project Jupyter has been awarded the 2017 ACM Software System Award, a significant honor for the project. We are humbled to join an illustrious list of projects…
    date: Mar 2, 2018
    authors: Project Jupyter
  - url: https://blog.jupyter.org/a-diagram-editor-for-jupyterlab-a254121ff919
    title: A Diagram Editor for JupyterLab
    image: https://raw.githubusercontent.com/QuantStack/jupyterlab-drawio/master/drawio.gif
    summary: The new JupyterLab interface is much more than a replacement for the classic notebook. It aims to bring together all the pieces required for a complete scientific workflow. The extension-based…
    date: Feb 26, 2018
    authors: Wolf Vollprecht
  - url: https://medium.com/@wolfv/fast-reductions-in-xtensor-with-simd-212a8543960a
    title: Fast Reductions in Xtensor with Xsimd
    image: https://miro.medium.com/max/1260/1*lKyNuvdkZlJwhwdatalQmw.png
    summary: "xtensor has a wealth of mathematical functions available already: we support a lot of the NumPy API right there in C++. One of the areas where we were a bit slower than NumPy in the past were…"
    date: Feb 20, 2018
    authors: Wolf Vollprecht
  - url: https://medium.com/@wolfv/faster-xtensor-87fcbe7f5293
    title: Faster Xtensor
    image: https://miro.medium.com/max/1260/1*NXfksdUzAtHjlw3y8wwqDg.jpeg
    summary: Knowing the size of the memory that is to be allocated at compile time can improve the runtime performance a lot — the compiler can already reserve the required space on the stack (instead of having…
    date: Feb 18, 2018
    authors: Wolf Vollprecht
  - url: https://blog.jupyter.org/interactive-workflows-for-c-with-jupyter-fe9b54227d92
    title: Interactive Workflows for C++ with Jupyter
    image: https://miro.medium.com/max/933/1*t_9qAXtdkSXr-0tO9VvOzQ.png
    summary: Scientists, educators and engineers not only use programming languages to build software systems, but also in interactive workflows, using the tools available to explore a problem and reason about…
    date: Nov 29, 2017
    authors: Sylvain Corlay, Loic Gouarin, Johan Mabille, Wolf Vollprecht
  - url: https://medium.com/@SylvainCorlay/scientific-computing-in-a-polyglot-world-with-xtensor-d81ff3865d6
    title: Scientific Computing in a Polyglot World with Xtensor
    image: https://miro.medium.com/max/540/1*mtoK6AtRa0pNGGm576Yj0w.jpeg
    summary: The One Language to Rule Them All probably does not exist yet. In the world of interactive scientific computing, countless articles and blog posts argue on the merits of R, Python, Julia and other…
    date: May 5, 2017
    authors: Sylvain Corlay
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