Re: std.traits.isBoolean

[Tony via Digitalmars-d-learn]

On Sunday, 18 February 2018 at 15:12:50 UTC, Mike Parker wrote:
Generally, no. But with alias this, it can be:

=====
import std.traits : BooleanTypeOf;
import std.stdio : writeln;

struct NoBool {
    int x;
}

struct AliasThisBool {
    bool b;
    alias b this;
}

void main()
{
    static if(is(BooleanTypeOf!NoBool)) writeln("NoBool");
    static if(is(BooleanTypeOf!AliasThisBool)) 
writeln("AliasThisBool");
}

Thanks!

It doesn't appear that BooleanTypeof is documented on dlang.org 
(outside of it's placement on the isBooleanType page). At least 
it isn't coming up in a "BooleanTypeOf site:dlang.org" search and 
not on the traits page:

https://dlang.org/library/std/traits.html