std::basic_string_view<CharT,Traits>::front
constexpr const_reference front() const; |
(since C++17) |
Returns reference to the first character in the view. The behavior is undefined if empty() == true
.
Parameters
(none).
Return value
reference to the first character, equivalent to operator[](0)
.
Complexity
Constant.
Example
#include <string_view> #include <iostream> int main() { for (std::string_view str{"ABCDEF"}; !str.empty(); str.remove_prefix(1)) std::cout << str.front() << ' ' << str << '\n'; }
Output:
A ABCDEF B BCDEF C CDEF D DEF E EF F F
See also
(C++17)
|
accesses the last character (public member function) |
(C++17)
|
checks whether the view is empty (public member function) |
(C++11)
|
accesses the first character (public member function of std::basic_string<CharT,Traits,Allocator> ) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/cpp/string/basic_string_view/front