std::experimental::basic_string_view<CharT,Traits>:: remove_prefix

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C++
Experimental
Library fundamentals
std::experimental::basic_string_view
constexpr void remove_prefix ( size_type n ) ;
(library fundamentals TS)

Moves the start of the view forward by n characters.

The behavior is undefined if n > size ( ) .

Parameters

n - number of characters to remove from the start of the view

Return value

(none)

Complexity

Constant.

Example

Run this code 
#include <iostream>
#include <experimental/string_view>
int main()
{
    std::string str = "   trim me";
    std::experimental::string_view v = str;
    v.remove_prefix(std::min(v.find_first_not_of(" "), v.size()));
    std::cout << "String: '" << str << "'\n"
              << "View  : '" << v << "'\n";
}

Output: 

String: '   trim me'
View  : 'trim me'

See also

shrinks the view by moving its end backward
(public member function)
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