Top "Covariant" questions

"Invalid covariant return type" errors in nested classes with methods returning template-based objects

The following C++ code gives me these errors when compiled: covariant.cpp:32:22: error: invalid covariant return type for ‘virtual Q&…

c++ class templates nested covariant

c# covariant generic parameter

I'm trying to understand this but I didn't get any appropriate results from searching. In c# 4, I can do public …

c# generics covariant

Why does Resharper say, "Co-variant array conversion from string[] to object[] can cause run-time exception on write operation" with this code?

This code: comboBoxMonth.Items.AddRange(UsageRptConstsAndUtils.months.ToArray()); public static List<String> months = new List<String> { "…

c# resharper string-conversion covariant covariant-return-types

Differing return type for virtual functions

A virtual function's return type should be the same type that is in base class, or covariant. But why do …

c++ overriding virtual-functions return-type covariant