View source code Display the source code in std/traits.d from which this page was generated on github. Improve this page Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone. Page wiki View or edit the community-maintained wiki page associated with this page.

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

License

Boost License 1.0.

Comments