true if T can be copied, false otherwise.
static struct S1 { } static struct S2 { this(this) { } } static struct S3 { @disable this(this); } static struct S4 { S3 s; } class C { } static assert(isCopyable!S1); static assert(isCopyable!S2); static assert(!isCopyable!S3); static assert(!isCopyable!S4); static assert(isCopyable!C); static assert(isCopyable!bool);
Determines whether the type T is copyable.
Only structs can be not copyable if their postblit constructor or the postblit constructor of one of its fields is disabled, i.e. annotated with $(D_KEYWORD @disable).