On 10/21/14 12:02 PM, Gary Willoughby wrote:
On Tuesday, 21 October 2014 at 15:45:55 UTC, Steven Schveighoffer wrote:
Currently, if you write something like this:
debug = x;
In code? Like this:
void main()
{
debug = x;
// now in debug mode even though not specified on the CLI?
}
Yes, but only for debug(x) statements. debug statements without a symbol
aren't enabled. But for those statements, purity is jettisoned. e.g.:
import std.stdio;
int a;
void foonotpure() { a = 5; writeln("yep, not pure");}
debug = x; // note this is only allowed at module scope.
void main() pure
{
debug(x) foonotpure();
}
dmd -run foonotpure.d
yep, not pure
If that's true, that's pretty scary. What if it's hidden in a module
somewhere?
Yep, you can just turn off purity when it gets in the way.
-Steve
