CompileTimeBox

This repository contains some useful compile-time tools for C++.

every feature is header-only, requires C++20, tested on MSVC, g++, clang++. (even freestanding? I'm not sure, but it's accually possible)

namedtuple

in some languages like Python, namedtuple is a built-in feature.

So, can users use namedtuple in C++? the answer is YES!

usage:

#include <string_view>
#include <ctb/namedtuple.hh>

void example() noexcept {
    constexpr auto nt = ctb::namedtuple::make_namedtuple<"a", "b", u8"hhh">(1, 2, "hello");
    static_assert(ctb::namedtuple::get<"a">(nt) == 1);
    static_assert(::std::string_view{ctb::namedtuple::get<u8"hhh">(nt)} == "hello");
    auto [a, b, hhh] = nt;
}

show more examples in test_namedtuple.

string

To support use string in compile time (even template), I wrote string.

#include <ctb/string.hh>

void example() noexcept {
    constexpr auto str1 = ctb::string::string{"hello"};
    constexpr auto str2 = ctb::string::string{"world"};
    static_assert(str1 == "hello"); // also support ::std::string, ::std::string_view and other encoding
    static_assert(ctb::string::concat(str1, str2) == "helloworld");
}

show more examples in test_string.