😎 Hint: Оптимизация std::vectorЗнаете ли вы

Библиотека C/C++ разработчика | cpp, boost, qt

😎 Hint: Оптимизация std::vector

Знаете ли вы, что можно значительно ускорить работу с вектором, если заранее выделить память?

Метод reserve() позволяет избежать многократных перераспределений памяти:

std::vector v;
v.reserve(1000); // выделяем память сразу

for(int i = 0; i < 1000; ++i) { 
    v.push_back(i); // не будет перевыделений памяти
}

Это может в разы увеличить работу с большими векторами.

Библиотека C/C++ разработчика #буст

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3.3K viewsedited May 13 at 09:08

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Create: 2025-05-13
Last Update: 2025-05-18 21:19:35

std::vector v;
v.reserve(1000); // выделяем память сразу

for(int i = 0; i < 1000; ++i) { 
    v.push_back(i); // не будет перевыделений памяти
}

Это может в разы увеличить работу с большими векторами.

Библиотека C/C++ разработчика #буст

BY Библиотека C/C++ разработчика | cpp, boost, qt

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