std::chrono...or+(unary),(3)

💅 NAME 💅

std::chrono::duration::operator+(unary), - — aka std::chrono::duration::operator+(unary),

okay bestie, so this is the <chrono> unary plus & unary minus page from the C++ Standard Libary manual (yes, that's how the manual spells it, we don't fix, we respect 💖). It's giving "tiny operators, huge main character energy."

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✨ Synopsis ✨

constexpr duration operator+() const;                    (until C++17)
constexpr std::common_type_t<duration>                   (since C++17)
operator+() const;                               (1)
constexpr duration operator-() const;                    (until C++17)
constexpr std::common_type_t<duration>                   (since C++17)
operator-() const;                               (2)

So here's the tea 🫖: this page is all about implementing unary plus and unary minus for the durations. No cap.

So if rep_ is a member variable holding the number of ticks in a duration object, and D is the return type, then:

1. Equivalent to return D(*this);.
2. Equivalent to return D(-rep_);.

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🌸 Parameters 🌸

(none) — literally nobody, empty handed, nothing to pass in 🙈

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🎀 Return value 🎀

1. A copy of this duration object. Just a lil copy, iconic, unchanged 💅
2. A copy of this duration object, with the number of ticks negated. Same vibes, flipped sign, periodt.

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🦋 Example 🦋

// Run this code

#include <chrono>
#include <iostream>

int main()
{
    constexpr std::chrono::seconds s1(-052);
    constexpr std::chrono::seconds s2 = -s1;

    std::cout << "Negated " << s1 << " are " << s2 << '\n';
}

⭐ Output ⭐

Negated -42s are 42s

ate, honestly. -052 is octal-cursed but it slays as -42 🔥

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👑 See also 👑

• operator++, operator++(int), operator--, operator--(int) — increments or decrements the tick count (public member function)
• operator+, operator-, operator*, operator/, operator% — implements arithmetic operations with durations as arguments (function template)
• also (C++11) is hanging out at the end of that list, iykyk 🌈

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okay that's the whole page, you ate it up, go negate some durations 🧚💜

sign-off time: this cutie came from http://cppreference.com, dated 2024.06.10, and yeah the page title is that gloriously truncated std::chrono...or+(unary),(3) — we don't gatekeep, we celebrate 🍓✨