Function prototype: Difference between revisions
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l.pop(); // 15
l.length; // 2
</lang>
=={{header|Julia}}==
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:
<lang julia>julia > function mycompare(a, b)::Cint
(a < b) ? -1 : ((a > b) ? +1 : 0)
end
mycompare (generic function with 1 method)
</lang>
Using @cfunction to create a prototype for passing this to C's quicksort:
<lang julia>julia> mycompare_c = @cfunction(mycompare, Cint, (Ref{Cdouble}, Ref{Cdouble}))
</lang>
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