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 isMutable

Returns true if T is not const or immutable. Note that isMutable is true for string, or immutable(char)[], because the 'head' is mutable.

Declaration

enum isMutable(T) = !is(T == const) && !is(T == immutable) && !is(T == inout);

Example

static assert( isMutable!int);
static assert( isMutable!string);
static assert( isMutable!(shared int));
static assert( isMutable!(shared const(int)[]));

static assert(!isMutable!(const int));
static assert(!isMutable!(inout int));
static assert(!isMutable!(shared(const int)));
static assert(!isMutable!(shared(inout int)));
static assert(!isMutable!(immutable string));

Authors

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

License

Boost License 1.0.

Comments