std::valarray::size(3)

💅 std::valarray::size(3) — C++ Standard Library, bestie edition 🎀

Okay so this is the manpage for std::valarray::size in the C++ Standard Library, and honestly? It's a short one. A little baby page. But she's iconic and you need to know her, so let's go. ✨

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🌸 NAME 🌸

std::valarray::size — literally just std::valarray::size, that's the whole name, no notes 💀

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🦋 Synopsis 🦋

std::size_t size() const;

The way that this one line just... tells you how many elements are in the valarray. That's it. That's the whole job. Main character energy fr fr 👑

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🍓 Parameters 🍓

• (none)

Not a single parameter. She takes nothing. She gives everything. We stan a low-maintenance icon 💖

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🌈 Return value 🌈

The number of elements in the valarray. That's the number. Count 'em. Slay. ✨

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🧚 Example 🧚

Go ahead and run this code, bestie, I promise it's cute:

// Run this code

#include <iostream>
#include <valarray>

int main()
{
    std::valarray<double> a = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
    std::cout << "Average: " << a.sum()/a.size() << '\n';
}

Look at her go — a.sum() divided by a.size(), absolute math girlboss behavior 😭🔥

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🌟 Output: 🌟

Average: 5.5

Five point five. Not five, not six — 5.5. The precision?? We love to see it 💅

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👑 See also 👑

• resize — changes the size of valarray (public member function)

That's the one that changes the size. size just reports on it. Different vibes entirely, don't get it twisted 🫶

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⭐ Friendly reminder: size() is const, she doesn't touch anything, she just looks and tells you. Respect. 🙈

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That's the whole page, bestie — you ate this one up 🍓 This little gem came straight from cppreference.com, dated 2024.06.10, and it's filed under std::valarray::size(3). Now go forth and count your elements. Periodt. 💜🦋✨