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Enum member std.traits.ifTestable

enum ifTestable(T, alias pred) = __traits(compiles, () { if (pred(T.init)) { } } );

Returns

true iff the type T can be tested in an if-expression, that is if if (pred(T.init)) {} is compilable.

Authors

Walter Bright, Tomasz Stachowiak (isExpressions), Andrei Alexandrescu, Shin Fujishiro, Robert Clipsham, David Nadlinger, Kenji Hara, Shoichi Kato

License

Boost License 1.0.