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std::experimental::erase_if (std::basic_string)

From cppreference.com
Defined in header <experimental/string>
template< class CharT, class Traits, class Alloc, class Pred >
void erase_if(std::basic_string<CharT,Traits,Alloc>& c, Pred pred);
(library fundamentals TS v2)

Erases all elements that satisfy the predicate pred from the container. Equivalent to c.erase(std::remove_if(c.begin(), c.end(), pred), c.end());

Contents

[edit] Parameters

c - container from which to erase
pred - predicate that determines which elements should be erased

[edit] Complexity

Linear.

[edit] Example

#include <experimental/string>
#include <iostream>
#include <iomanip>
 
int main()
{
    std::string data { "1337!p_C00L_<a-_HACKER_!@s_{!s#@_w^o%r*d#42" };
 
    std::cout << "Original string: " << quoted(data) << '\n';
 
    auto crack = [](auto O) { return O < 0141 or 0172 < O; };
 
    std::experimental::erase_if(data, crack);
 
    std::cout << "After erase_if:  " << quoted(data) << '\n';
}

Output:

Original string: "1337!p_C00L_<a-_HACKER_!@s_{!s#@_w^o%r*d#42"
After erase_if:  "password"

[edit] See also

removes elements satisfying specific criteria
(function template) [edit]
(library fundamentals 2 TS)
Erases all elements equal to a specific value from a std::basic_string
(function template) [edit]