◐ Shell
reader mode source ↗
From cppreference.com
 
 
Utilities library
General utilities
Relational operators (deprecated in C++20)
Integer comparison functions
(C++20)(C++20)(C++20)    
(C++20)
Swap and type operations
(C++14)
(C++11)
(C++11)
(C++11)
(C++17)
Common vocabulary types
(C++11)
(C++17)
(C++17)
(C++17)
(C++11)
(C++17)
(C++23)



 
 
 
explicit operator bool() const noexcept;
(since C++11)

Checks whether the stored error value is not zero.

Parameters

(none)

Return value

true if value != 0, false otherwise.