hasBasicMathOp

1 static assert( !hasBasicMathOp!int ); // can't get int from expr(int * double)
2 static assert(  hasBasicMathOp!float );
3 static assert(  hasBasicMathOp!double );
4 static assert(  hasBasicMathOp!real );
5 static assert(  hasBasicMathOp!cfloat );
6 static assert( !hasBasicMathOp!char );
7 static assert( !hasBasicMathOp!string );
8 
9 static struct TTest
10 {
11     float x,y;
12     auto opBinary(string op)( in TTest v ) const
13         if( op=="+" || op=="-" )
14     { return TTest(x+v.x,y+v.y); }
15     auto opBinary(string op)( double v ) const
16         if( op=="*" || op=="/" )
17     { return TTest(x*v,y*v); }
18 }
19 
20 static assert( hasBasicMathOp!TTest );
21 
22 struct FTest
23 {
24     float x,y;
25     auto opAdd( in TTest v ) const { return TTest(x+v.x,y+v.y); }
26 }
27 
28 static assert( !hasBasicMathOp!FTest );