On 11/24/13 11:18 AM, ilya-stromberg wrote:
On Sunday, 24 November 2013 at 14:12:18 UTC, Maxim Fomin wrote:
void* ptr;
if(ptr)
was a shortcut for 'if(ptr != NULL)' probably since C was created.
Small code change:
import std.stdio;
class Foo
{
}
void main()
{
Foo f;
if(f == null)
{
writeln("f is true");
}
if(f != null)
{
writeln("f is false");
}
}
DMD output:
Error: use 'is' instead of '==' when comparing with null
Error: use '!is' instead of '!=' when comparing with null
Ugh, if the compiler disallows comparison of reference with "==" and
"!=" and tells you to use "is" and "!is", can't compiler just allow you
to write "==" and understand it as "is"? What's the big deal?
