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std::experimental:: erase_if (std::forward_list)

From cppreference.net

template < class T, class Alloc, class Pred >
void erase_if ( std:: forward_list < T, Alloc > & c, Pred pred ) ;
(库基础 TS v2)

从容其中删除所有满足谓词 pred 的元素。等价于 c. remove_if ( pred ) ;

目录

参数

c - 要执行擦除操作的容器
pred - 用于判定哪些元素应被擦除的谓词

复杂度

线性。

示例

#include <experimental/forward_list>
#include <iostream>
template<typename Os, typename Container>
inline Os& operator<<(Os& os, Container const& container)
{
    os << "{ ";
    for (const auto& item : container)
        os << item << ' ';
    return os << '}';
}
int main()
{
    std::forward_list<int> data{3, 3, 4, 5, 5, 6, 6, 7, 2, 1, 0};
    std::cout << "Original:\n" << data << '\n';
    auto divisible_by_3 = [](auto const& x) { return (x % 3) == 0; };
    std::experimental::erase_if(data, divisible_by_3);
    std::cout << "Erase all items divisible by 3:\n" << data << '\n';
}

输出:

Original:
{ 3 3 4 5 5 6 6 7 2 1 0 }
Erase all items divisible by 3:
{ 4 5 5 7 2 1 }

另请参阅

移除满足特定条件的元素
(函数模板)
移除满足特定条件的元素
( std::forward_list<T,Allocator> 的公开成员函数)
(library fundamentals 2 TS)
std::forward_list 中擦除所有等于特定值的元素
(函数模板)