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Enum std.traits.member isSomeString
Detect whether T
is one of the built-in string types.
The built-in string types are Char[]
, where Char
is any of char
,
wchar
or dchar
, with or without qualifiers.
Static arrays of characters (like char[80]
) are not considered
built-in string types.
Declaration
enum isSomeString(T) = is(StringTypeOf!T) && !isAggregateType!T && !isStaticArray!T;
Example
static assert(!isSomeString!int); static assert(!isSomeString!(int[])); static assert(!isSomeString!(byte[])); static assert(!isSomeString!(typeof(null))); static assert(!isSomeString!(char[4])); enum ES : string { a = "aaa", b = "bbb" } static assert( isSomeString!ES);
Authors
Walter Bright,
Tomasz Stachowiak (
),
Andrei Alexandrescu,
Shin Fujishiro,
Robert Clipsham,
David Nadlinger,
Kenji Hara,
Shoichi Kato
isExpressions