isCopyable

1 struct S1 {}                        // Fine. Can be copied
2 struct S2 {         this(this) {}}  // Fine. Can be copied
3 struct S3 {@disable this(this);  }  // Not fine. Copying is disabled.
4 struct S4 {S3 s;}                   // Not fine. A field has copying disabled.
5 
6 class C1 {}
7 
8 static assert( isCopyable!S1);
9 static assert( isCopyable!S2);
10 static assert(!isCopyable!S3);
11 static assert(!isCopyable!S4);
12 
13 static assert(isCopyable!C1);
14 static assert(isCopyable!int);
15 static assert(isCopyable!(int[]));