- The C Standard Library
- The C Standard Library
- The C++ Standard Library
- C++ Library - Home
- C++ Library - <fstream>
- C++ Library - <iomanip>
- C++ Library - <ios>
- C++ Library - <iosfwd>
- C++ Library - <iostream>
- C++ Library - <istream>
- C++ Library - <ostream>
- C++ Library - <sstream>
- C++ Library - <streambuf>
- C++ Library - <atomic>
- C++ Library - <complex>
- C++ Library - <exception>
- C++ Library - <functional>
- C++ Library - <limits>
- C++ Library - <locale>
- C++ Library - <memory>
- C++ Library - <new>
- C++ Library - <numeric>
- C++ Library - <regex>
- C++ Library - <stdexcept>
- C++ Library - <string>
- C++ Library - <thread>
- C++ Library - <tuple>
- C++ Library - <typeinfo>
- C++ Library - <utility>
- C++ Library - <valarray>
- The C++ STL Library
- C++ Library - <array>
- C++ Library - <bitset>
- C++ Library - <deque>
- C++ Library - <forward_list>
- C++ Library - <list>
- C++ Library - <map>
- C++ Library - <queue>
- C++ Library - <set>
- C++ Library - <stack>
- C++ Library - <unordered_map>
- C++ Library - <unordered_set>
- C++ Library - <vector>
- C++ Library - <algorithm>
- C++ Library - <iterator>
- C++ Programming Resources
- C++ Programming Tutorial
- C++ Useful Resources
- C++ Discussion
C++ valarray Library - Function operator=
Description
It assigns contents to the valarray object.
Declaration
Following is the declaration for std::valarray::operator= function.
valarray& operator=(const valarray& x);
C++11
valarray& operator=(const valarray& x);
Parameters
x − It is a valarray object of the same type.
val − A value assigned to all the elements are in the valarray.
x − The result of a valarray subscripting operation.
Return Value
It returns *this.
Exceptions
Basic guarantee − if any operation performed on the elements throws an exception.
Data races
All elements effectively copied are accessed.
Example
In below example explains about std::valarray::operator= function.
#include <iostream> #include <valarray> int main () { std::valarray<int> foo (10); std::valarray<int> bar (2,40); foo = bar; bar = 5; foo = bar[std::slice (0,4,1)]; std::cout << "foo sums " << foo.sum() << '\n'; return 0; }
Let us compile and run the above program, this will produce the following result −
foo sums 92
valarray.htm
Advertisements