• bearophile (4/4) Apr 22 2009 Are there ways in D2 to tell if a function has the 'pure' attribute?
• Don (12/17) Apr 22 2009 It's easy enough if it's a function pointer or delegate:

bearophile <bearophileHUGS lycos.com> writes:

Are there ways in D2 to tell if a function has the 'pure' attribute?
(To create a parallel_map() function we will want to be sure it takes a pure
mapping function as argument).

Bye,
bearophile

Don <nospam nospam.com> writes:

bearophile wrote:
 Are there ways in D2 to tell if a function has the 'pure' attribute?
 (To create a parallel_map() function we will want to be sure it takes a pure
mapping function as argument).
 
 Bye,
 bearophile

It's easy enough if it's a function pointer or delegate:

int foo(T, U...)(T function(U) pure x) {
    return 7;
}

void main()
{
    int function(int) pure p=null;
    int function(int) q = null;
    foo(p); // OK
//   foo(q); // won't compile.
}