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IfCompiled—Wolfram Documentation

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IfCompiled[comp,uncomp]

gives comp when compiled and uncomp when evaluated.

Details
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Examples  
Basic Examples  
Scope  
Evaluation  
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IfCompiled

IfCompiled[comp,uncomp]

gives comp when compiled and uncomp when evaluated.

Details

  • IfCompiled[comp,uncomp] ignores uncomp when compiling and ignores comp when evaluating.
  • Compilation for IfCompiled is carried out by FunctionCompile and related functions.
  • IfCompiled can be useful to migrate evaluated code to the compiler.

Examples

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Basic Examples  (1)

Define a function that uses IfCompiled:

Wolfram Language code: func = Function[{}, IfCompiled["compiled", "uncompiled"]]

During normal evaluation, this function returns the uncompiled result:

Wolfram Language code: func[]

Compile the function. FunctionCompile compiles with the compiled branch of IfCompiled:

Wolfram Language code: funcComp = FunctionCompile[func]

Check that the compiled result is returned:

Wolfram Language code: funcComp[]

Scope  (1)

Evaluation  (1)

In evaluated mode, IfCompiled only processes the uncompiled argument:

Wolfram Language code: func = Function[{}, IfCompiled[Print["compiled printed"], Print["uncompiled printed"]]]; func[]

In compiled mode, IfCompiled only processes the compiled argument:

Wolfram Language code: funcComp = FunctionCompile[func]; funcComp[]
Wolfram Research (2022), IfCompiled, Wolfram Language function, https://reference.wolfram.com/language/ref/IfCompiled.html.

Text

Wolfram Research (2022), IfCompiled, Wolfram Language function, https://reference.wolfram.com/language/ref/IfCompiled.html.

CMS

Wolfram Language. 2022. "IfCompiled." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/IfCompiled.html.

APA

Wolfram Language. (2022). IfCompiled. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/IfCompiled.html

BibTeX

@misc{reference.wolfram_2026_ifcompiled, author="Wolfram Research", title="{IfCompiled}", year="2022", howpublished="\url{https://reference.wolfram.com/language/ref/IfCompiled.html}", note=[Accessed: 14-November-2026]}

BibLaTeX

@online{reference.wolfram_2026_ifcompiled, organization={Wolfram Research}, title={IfCompiled}, year={2022}, url={https://reference.wolfram.com/language/ref/IfCompiled.html}, note=[Accessed: 14-November-2026]}