std::list::size(3)

💅 std::list::size — C++ Standard Libary main character energy

okay so this is the page for std::list::size(3), straight outta the C++ Standard Libary, and yes bestie it is literally about std::list::size. no cap, we're getting into it. 🫶

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✨ NAME ✨

std::list::size — std::list::size

like… that's the name, that's the function, that's the vibe. periodt. 💅

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🦋 Synopsis 🦋

Two eras, bestie — the before-times and the noexcept glow-up:

size_type size() const;           (until C++11)
size_type size() const noexcept;  (since C++11)

It returns the number of elements in the container, i.e. std::distance(begin(), end()). that's the whole assignment. ✨

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💖 Parameters 💖

(none)

absolutely none, bestie. not a single argument. she takes no notes. 🎀

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🎀 Return value 🎀

The number of elements in the container.

that's it. that's the tea. the count. 👑

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🔥 Complexity 🔥

• Until C++11: Constant or linear.
• Since C++11: Constant.

so modern you is eating good, fr fr. 🔥

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🌈 Example 🌈

The following code uses size to display the number of elements in a std::list:

// Run this code

#include <iostream>
#include <list>

int main()
{
    std::list<int> nums{1, 3, 5, 7};

    std::cout << "nums contains " << nums.size() << " elements.\n";
}

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🍓 Output 🍓

nums contains 4 elements.

slay. four little ints, one iconic little output. 💖

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👑 See also 👑

• empty — checks whether the container is empty (public member function)
• max_size — returns the maximum possible number of elements (public member function)
• resize — changes the number of elements stored (public member function)

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mwah 💋 — source/version: http://cppreference.com · date: 2024.06.10 · manual: std::list::size(3). bestie, you understood the assignment. 🧚‍♀️💜