std::litera...perator""ms(3)

✨ NAME ✨

okay so bestie, this is the std::litera...perator""ms(3) page from the C++ Standard Libary 💖 and the official name vibe is std::literals::chrono_literals::operator""ms — std::literals::chrono_literals::operator""ms 🎀

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🌸 Synopsis 🌸

Defined in header <chrono>:

constexpr std::chrono::milliseconds                          (1)
(since C++14)
operator""ms( unsigned long long ms );
constexpr std::chrono::duration</*unspecified*/, std::milli> (2)
(since C++14)
operator""ms( long double ms );

This forms a std::chrono::duration literal representing milliseconds. no cap ⏱️✨

1. Integer literal, returns exactly std::chrono::milliseconds(ms).
2. Floating-point literal, returns a floating-point duration equivalent to std::chrono::milliseconds.

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🎀 Parameters 🎀

• ms — the number of milliseconds 💅

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🦋 Return value 🦋

The std::chrono::duration literal. periodt 🫶

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💜 Possible implementation 💜

constexpr std::chrono::milliseconds operator""ms(unsigned long long ms)
{
    return std::chrono::milliseconds(ms);
}
constexpr std::chrono::duration<long double, std::milli> operator""ms(long double ms)
{
    return std::chrono::duration<long double, std::milli>(ms);
}

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🌈 Notes 🌈

This operator is declared in the namespace std::literals::chrono_literals, where both literals and chrono_literals are inline namespaces. Access to this operator can be gained with:

• using namespace std::literals,
• using namespace std::chrono_literals, or
• using namespace std::literals::chrono_literals.

In addition, within the namespace std::chrono, the directive using namespace literals::chrono_literals; is provided by the standard library, so that if a programmer uses using namespace std::chrono; to gain access to the classes in the chrono library, the corresponding literal operators become visible as well. iykyk 💫

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🍓 Example 🍓

the page says // Run this code so here is the exact code, bestie:

#include <chrono>
#include <iostream>

int main()
{
    using namespace std::chrono_literals;
    constexpr auto d1{250ms};
    constexpr std::chrono::milliseconds d2{1s};
    std::cout << d1 << " = " << d1.count() << " milliseconds\n"
              << d2 << " = " << d2.count() << " milliseconds\n";
}

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⭐ Output ⭐

250ms = 250 milliseconds
1000ms = 1000 milliseconds

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👑 See also 👑

• constructor — constructs new duration (public member function of std::chrono::duration<Rep,Period>)

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okay bye bestie 🫶 — source/version + date: http://cppreference.com, 2024.06.10, and the page tag std::litera...perator""ms(3) 💖