std::basic_string<CharT,Traits,Allocator>::starts_with
bool starts_with(std::basic_string_view<CharT, Traits> x) const noexcept; | (1) | (since C++20) |
bool starts_with(CharT x) const noexcept; | (2) | (since C++20) |
bool starts_with(const CharT* x) const; | (3) | (since C++20) |
Checks if the string begins with the given prefix, where.
1) the prefix is a string view (which may be a result of implicit conversion from another
std::basic_string)
2) the prefix is a single character
3) the prefix is a C-style string
All three overloads effectively return std::basic_string_view<CharT, Traits>(data(), size()).starts_with(x);
Parameters
| x | - | a character sequence or a single character to compare to the start of the string |
Return value
true if the string begins with the provided prefix, false otherwise.
Example
See also
|
(C++20) | checks if the string ends with the given suffix (public member function) |
|
(C++20) | checks if the string view starts with the given prefix (public member function of std::basic_string_view<CharT,Traits>) |
|
(C++20) | checks if the string view ends with the given suffix (public member function of std::basic_string_view<CharT,Traits>) |
| compares two strings (public member function) |
|
| returns a substring (public member function) |
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