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std::basic_string_view::starts_with

From cppreference.com
 
 
 
 
constexpr bool starts_with(std::basic_string_view x) const noexcept;
(1) (since C++20)
constexpr bool starts_with(CharT x) const noexcept;
(2) (since C++20)
constexpr bool starts_with(const CharT* x) const;
(3) (since C++20)

Checks if the string view begins with the given prefix, where

1) the prefix is a string view. Effectively returns size() >= x.size() && compare(0, x.size(), x) == 0;
2) the prefix is a single character. Effectively returns starts_with(basic_string_view(&x, 1));
3) the prefix is a C-style string. Effectively returns starts_with(basic_string_view(x));

Contents

[edit] Parameters

x - a character sequence or a single character to compare to the start of the string view

[edit] Return value

true if the string view begins with the provided prefix, false otherwise.

[edit] Example

[edit] See also

(C++20)
checks if the string view ends with the given suffix
(public member function) [edit]
checks if the string starts with the given prefix
(public member function of std::basic_string) [edit]
(C++20)
checks if the string ends with the given suffix
(public member function of std::basic_string) [edit]
compares two views
(public member function) [edit]