Function prototype: Difference between revisions
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l.pop(); // 15 |
l.pop(); // 15 |
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l.length; // 2 |
l.length; // 2 |
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</lang> |
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=={{header|Julia}}== |
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Julia does not need or use function prototypes in general. Generic functions are further specialized as to argument type and return type during just-in-time compilation if required. Julia can protoype its functions for passing its fuctions to extrenal languages such as C with the @cfunction macro: |
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<lang julia>julia > function mycompare(a, b)::Cint |
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(a < b) ? -1 : ((a > b) ? +1 : 0) |
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end |
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mycompare (generic function with 1 method) |
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</lang> |
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Using @cfunction to create a prototype for passing this to C's quicksort: |
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<lang julia>julia> mycompare_c = @cfunction(mycompare, Cint, (Ref{Cdouble}, Ref{Cdouble})) |
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</lang> |
</lang> |
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