• Marc (8/22) Dec 20 2017 but when I do:
• Mengu (3/13) Dec 20 2017 if PAGESIZE is not dynamic, it will not work at compile time.
• Marc (4/22) Dec 20 2017 the problem is, PAGESIZE part of D's library so I can't change

Marc <jckj33 gmail.com> writes:

Give this function I'd like to run it at compile time:

	import std.concurrency : Generator, yield;
	Generator!string getNonIntegralMembers() {
		return new Generator!string({
			enum allMembers = __traits(derivedMembers, C);
			foreach(enum string member; allMembers) {
				bool isInteg = __traits(isIntegral, >__traits(getMember, C, 
member));
				if(!isInteg) {
					yield(member);
				}
			}
		});
	}

but when I do:

 enum string[] members = getNonIntegralMembers();
 writeln(members);

I get the following erros:

C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\thread.d(4059): Error:
static variable PAGESIZE cannot be read at compile time
C:\D\dmd2\windows\bin\..\..\src\phobos\std\concurrency.d(1548):   
      called from here: super.this(dg, PAGESIZE * 4u, PAGESIZE)
app.d(96):        called from here: getNonIntegralMembers()

Mengu <mengukagan gmail.com> writes:

On Wednesday, 20 December 2017 at 16:54:35 UTC, Marc wrote:
 Give this function I'd like to run it at compile time:

 	import std.concurrency : Generator, yield;
[...]

 but when I do:

 [...]

 I get the following erros:

 C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\thread.d(4059): Error:
static variable PAGESIZE cannot be read at compile time
 C:\D\dmd2\windows\bin\..\..\src\phobos\std\concurrency.d(1548):
      called from here: super.this(dg, PAGESIZE * 4u, PAGESIZE)
 app.d(96):        called from here: getNonIntegralMembers()

if PAGESIZE is not dynamic, it will not work at compile time. 
make it an enum or const and give it a try.

Marc <jckj33 gmail.com> writes:

On Wednesday, 20 December 2017 at 17:16:50 UTC, Mengu wrote:
 On Wednesday, 20 December 2017 at 16:54:35 UTC, Marc wrote:
 Give this function I'd like to run it at compile time:

 	import std.concurrency : Generator, yield;
[...]

 but when I do:

 [...]

 I get the following erros:

 C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\thread.d(4059): Error:
static variable PAGESIZE cannot be read at compile time
 C:\D\dmd2\windows\bin\..\..\src\phobos\std\concurrency.d(1548):
      called from here: super.this(dg, PAGESIZE * 4u, PAGESIZE)
 app.d(96):        called from here: getNonIntegralMembers()

 if PAGESIZE is not dynamic, it will not work at compile time. 
 make it an enum or const and give it a try.

the problem is, PAGESIZE part of D's library so I can't change 
it. I'm looking for a way to make Generators work at runtime 
actually. Or a replacement for it.