std::regex_traits::length(3)

Hey bestie 💖 welcome to std::regex_traits::length from the C++ Standard Libary manual, section 3. It’s a tiny function with main-character energy, and we’re gonna get into it. ✨

🎀 NAME 🎀

std::regex_traits::length — yep, that’s the name, and it’s literally the std::regex_traits::length function. Cute, concise, iconic. 💅

🦋 Synopsis 🦋

static std::size_t length( const char_type* p );

Okay so it calculates the length of a null-terminated character sequence — that is, the smallest i such that p[i] == 0. No cap. 🌸

Standard library specializations of std::regex_traits execute std::char_traits<CharT>::length(p);. That’s the actual tea. 🫶

📍 Parameters 📍

• p — pointer to the first element of the null-terminated character sequence. Literally the starting point, bestie. 🎀

⭐ Return value ⭐

The length of the null-terminated character string. That’s it, that’s the return value. 💖

🍓 Example 🍓

// Run this code

#include <iostream>
#include <regex>

int main()
{
    std::cout << std::regex_traits<char>::length("Кошка") << '\n'
              << std::regex_traits<wchar_t>::length(L"Кошка") << '\n';
}

🌈 Output 🌈

10
5

Source/version/date sign-off 🫶: http://cppreference.com · 2024.06.10. Stay slaying, bestie. 💋✨