std::experimental::erase (std::forward_list)

 

C++

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Feature test macros (C++20)

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Technical specifications

Symbols index

External libraries

 

Technical specifications

Filesystem library (filesystem TS)

Library fundamentals (library fundamentals TS)

Library fundamentals 2 (library fundamentals TS v2)

Library fundamentals 3 (library fundamentals TS v3)

Extensions for parallelism (parallelism TS)

Extensions for parallelism 2 (parallelism TS v2)

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Extensions for concurrency 2 (concurrency TS v2)

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Library fundamentals v2

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detection idiom

uniform container erasure

logical operator type traits

 

Defined in header <experimental/forward_list>
template< class T, class A, class U > void erase( std::forward_list<T, A>& c, const U& value );		(library fundamentals TS v2)

Erases all elements that compare equal to value from the container. Equivalent to c.remove_if([&](auto& elem) { return elem == value; });.

Parameters

c	-	container from which to erase
value	-	value to be removed

Complexity

Linear.

Example

Run this code

#include <experimental/forward_list>
#include <iostream>
 
auto show = [](const auto& container)
{
    for (auto e : container)
        std::cout << e;
    std::cout << '\n';
};
 
int main()
{
    std::forward_list<int> data{1, 1, 1, 4, 1, 1, 1, 2, 1, 1, 1};
    show(data);
    std::experimental::erase(data, 1);
    show(data);
}

Output:

11141112111
42

Notes

Unlike std::forward_list::remove, this function template accepts heterogeneous types and does not force a conversion to the container's value type before invoking the == operator.

See also

removeremove_if	removes elements satisfying specific criteria (function template)
removeremove_if (C++11)	removes elements satisfying specific criteria (public member function of std::forward_list<T,Allocator>)
erase_if (std::forward_list) (library fundamentals 2 TS)	erases all elements satisfying a predicate from a std::forward_list (function template)