On Monday, 19 June 2017 at 09:10:16 UTC, Dsby wrote:
On Saturday, 17 June 2017 at 17:15:50 UTC, Adam D. Ruppe wrote:
On Saturday, 17 June 2017 at 14:19:34 UTC, ANtlord wrote:
[...]


Where the variable is defined that is referenced in the closure.

So:

[...]

if the uses parma is 'scope':

void uses(scope void delegate() dg);

will it be not alloc memory?

I test it , if use scope it will not alloc memony.

import std.stdio;

void call(void delegate() fun)
{
    fun();
}

void call2(scope void delegate() fun)
{
    fun();
}

void main()
{
    int a = 10;
   // call((){writeln(a);});
    call2((){writeln(a);});
}
dmd -vgc ./t.d
it will not print anything.

if use call:
void main()
{
    int a = 10;
    call((){writeln(a);});
   // call2((){writeln(a);});
}

dmd -vgc ./t.d 182ms  2017年06月19日 星期一 17时16分47秒
./t.d(13): vgc: using closure causes GC allocation

Reply via email to