Ok i found out a pretty decent solution: basically i need to unpack one extra lambda case and apply the using clause to the unpacked lambda and the rest, but in this case, since i apparently i cannot make a variadic list of using declarations (at least i don’t know the syntax, if its possible), … Read more
You should define them in the library namespace. The compiler will find them anyway through argument dependant lookup. No need to pollute the global namespace.
It sounds like you want to change: friend ostream& operator << (ostream& out, const Base<T>& e); To: template<class T> friend ostream& operator << (ostream& out, const Base<T>& e);
In C++11, you should add rvalue reference: A(A&&); void operator=(A&& a );
The great thing about Rust is that it’s open source. This means you can see how the authors of the language have solved a problem. The closest analogue is primitive integer types: macro_rules! add_impl { ($($t:ty)*) => ($( #[stable(feature = “rust1”, since = “1.0.0”)] impl Add for $t { type Output = $t; #[inline] fn … Read more
The == operator may be overridden, and if it is, the default reference comparison may not be what you get. Casting to System.Object ensures that calling == performs a reference equality test. public static bool operator ==(MyObj a, MyObj b) { // don’t do this! return true; } … MyObj a = new MyObj(); MyObj … Read more
type Overloads = Overloads with static member ($) (Overloads, m1: #IMeasurable) = fun (m2: #IMeasurable) -> m1.Measure + m2.Measure static member ($) (Overloads, m1: int) = fun (m2: #IMeasurable) -> m1 + m2.Measure let inline ( |+| ) m1 m2 = (Overloads $ m1) m2 Not tested, since I don’t have IMeasurable, but it may … Read more
The problem is that in Windows a newline is represented as CR + LF which is: “\r\n” and in Unix it is LF which is just “\n”. Your std::getline(…) command is reading till the “\n” in “leer\r\n” and discards the “\n”, your resulting string will be: “leer\r” To solve this problem and convert files between … Read more
Operators must be declared inside a “related” class’ body. For instance: public class Foo { int X; // Legal public static int operator+(int x, Foo y); // This is not public static int operator+(int x, int y); } Since you don’t have access to the implementation of arrays, your best bet would be to either … Read more
http://www.devx.com/tips/Tip/12515 class Date { //… public: Date& operator++(); //prefix Date& operator–(); //prefix Date operator++(int unused); //postfix Date operator–(int unused); //postfix };