std::basic_string<CharT,Traits,Allocator>::erase
< cpp | string | basic string
basic_string& erase( size_type index = 0, size_type count = npos ); |
(1) | |
(2) | ||
iterator erase( iterator position ); |
(until C++11) | |
iterator erase( const_iterator position ); |
(since C++11) | |
(3) | ||
iterator erase( iterator first, iterator last ); |
(until C++11) | |
iterator erase( const_iterator first, const_iterator last ); |
(since C++11) | |
Removes specified characters from the string.
2) Removes the character at
position
.3) Removes the characters in the range
[first, last)
.Parameters
index | - | first character to remove |
count | - | number of characters to remove |
position | - | iterator to the character to remove |
first, last | - | range of the characters to remove |
Return value
1) *this
2) iterator pointing to the character immediately following the character erased, or
end()
if no such character exists3) iterator pointing to the character
last
pointed to before the erase, or end()
if no such character existsExceptions
2-3) (none)
In any case, if an exception is thrown for any reason, this function has no effect (strong exception guarantee). (since C++11)
Example
Run this code
#include <iostream> #include <algorithm> #include <string> int main() { std::string s = "This is an example"; std::cout << s << '\n'; s.erase(0, 5); // Erase "This " std::cout << s << '\n'; s.erase(std::find(s.begin(), s.end(), ' ')); // Erase ' ' std::cout << s << '\n'; s.erase(s.find(' ')); // Trim from ' ' to the end of the string std::cout << s << '\n'; }
Output:
This is an example is an example isan example isan
See also
clears the contents (public member function) |