std.traits.isBoolean

[Tony]

On Monday, 19 February 2018 at 17:22:04 UTC, Nathan S. wrote:
> On Monday, 19 February 2018 at 15:12:15 UTC, Tony wrote:
>> But, assuming there is a use case for it, what if you want to 
>> restrict to a type that is either boolean, or a struct/class 
>> that can substitute for boolean - how do you do that without 
>> using the "private" BooleanTypeOf thing?
>
>
> In that case you can just write `is(T : bool)`.

Thanks.

Assuming it would substitute, that should probably be used on 
this page in place of BooleanTypeOf since BooleanTypeOf is not 
supposed to be public:

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

"enum isBoolean(T) = is(BooleanTypeOf!T) && !isAggregateType!T;"