Typed   

Listing of Compiled Types »

Typed[expr,type]

represents an expression that should be assumed to be of a specified type for compilation and other purposes.

Details

Examples

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Basic Examples  (4)

Typed specifies the type of function arguments:

FunctionCompile uses Typed annotations for compiling code:

The CompiledCodeFunction evaluates with an argument that matches the type:

If the type of an argument does not match the declared type, an error results:

For computation in the Wolfram Engine, the use of Typed is typically ignored:

"ListVector"
is a compound type that takes another type as an argument:

The computation proceeds as expected:

A function type can be used an argument to a compiled function:

The computation proceeds as expected:

Typed is also used in FunctionDeclaration:

The compilation uses the function declaration:

Possible Issues  (1)

Use in Evaluated Code  (1)

Typed can be used in the body of a function:

When compiled, it is used to guide the type inferencing process:

However, when evaluated, Typed is treated as an inert expression:

It is better to use TypeHint in the body of a function:

When compiled, it is used to guide the type inferencing process:

However, when evaluated, TypeHint is stripped out:

Wolfram Research (2019), Typed, Wolfram Language function, https://reference.wolfram.com/language/ref/Typed.html.

Text

Wolfram Research (2019), Typed, Wolfram Language function, https://reference.wolfram.com/language/ref/Typed.html.

CMS

Wolfram Language. 2019. "Typed." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/Typed.html.

APA

Wolfram Language. (2019). Typed. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Typed.html

BibTeX

@misc{reference.wolfram_2024_typed, author="Wolfram Research", title="{Typed}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/Typed.html}", note=[Accessed: 17-January-2025 ]}

BibLaTeX

@online{reference.wolfram_2024_typed, organization={Wolfram Research}, title={Typed}, year={2019}, url={https://reference.wolfram.com/language/ref/Typed.html}, note=[Accessed: 17-January-2025 ]}