dynamic runBinary(dynamic f(arg1, arg2), arg1, arg2)

Executes the given callback f with argument arg1 and arg2 in this zone.

Source 

/*=R*/ runBinary/*<R, T1, T2>*/(
    /*=R*/ f(/*=T1*/ arg1, /*=T2*/ arg2), /*=T1*/ arg1, /*=T2*/ arg2);