On Monday, 14 January 2013 at 06:26:33 UTC, 1100110 wrote:
On 01/13/2013 11:35 PM, 1100110 wrote:
Ok, I wish to create a standard timing system so that I can
measure ~how
long each function takes to execute.
I wish to be able to place at the start of a function
version(Time) mixin TimeExecution("funcName");
mixin template TimeExecution(T) if(isSomeString!T) {
import std.stdio, std.datetime, std.conv;
auto sw = StopWatch(AutoStart.yes);
// Error: Declaration expected, not '('
scope(exit) writeln(T, ": ", to!Duration(sw.peek));
}
Why do I receive the Error when the scope statement is
included?
Is this an error, or what is the rationale behind the decision?
Thank you.
It appears that you cannot mixin *any* statement with
scope([exit,success,etc]) in it.
Mixin templates are supposed to introduce *declarations* not
statements.
Eg. even this shouldn't compile, should it?
---
mixin template TimeExecution(T) if(isSomeString!T) {
import std.stdio;
writeln(T); // statement
}
---
