const-reference

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Inline Function Arguments Passing

Is there a need performance-wise for inline functions to pass its arguments by const reference like foo(开发者_开发百科const T & a, const T &b)[详细]

2023-04-10 16:48 分类：问答
Prevent temporary from extending its lifetime?

This may be impossible, but I was wondering if it was possible to keep a temporary from ever lasting past its original expression. I have a chain of objects which point to parent objects, and a member[详细]

2023-04-09 08:42 分类：问答
Warning C4172: Returning a reference to const std::string bound to a local variable. How safe is it?

I was just building one of our projects at work and I see a new function was added: const std::string& ClassName::MethodName() const[详细]

2023-03-27 21:27 分类：问答
What is the lifetime of the class data member which const reference to a rvalue?

Generally this discussion is up to the local function variable only: void foo (const int &i) { // use i till foo() ends[详细]

2023-03-20 13:25 分类：问答
Binding temporary to const reference in c'tor initializer list

Section 12.2.5 in C++03 says \"A temporary boun开发者_如何学Pythond to a reference member in a constructor’s ctor-initializer (12.6.2) persists until the constructor exits\"[详细]

2023-02-05 09:53 分类：问答
Implicit conversion : const reference vs non-const reference vs non-reference

Consider this code, struct A {}; struct B {B(const A&) {} }; void f(B) { cout << \"f()\"<<endl;[详细]

2023-02-04 06:22 分类：问答
Is this valid C++ code according to standard?

I have this sample code: struct A { bool test() const { return false; } }; template <typename T = A> class Test[详细]

2023-01-30 05:22 分类：问答
Returning const reference of an arraylist

I really admire java features and I don\'t want to give up us开发者_开发问答ing it for the next problem:[详细]

2023-01-26 21:04 分类：问答
const_reference or iterator for map (when not actually iterating)

I have some code that uses an iterator to loop through all elements of an unordered_map, but within that loop there are several other processes where I store iterators to particular elements in the ma[详细]

2023-01-12 19:44 分类：问答
Adding class functionality via composition

Suppose we have an abstract class Element from which classes Triangle and Quadrilateral are derived from.[详细]

2023-01-11 21:27 分类：问答