FBVector

[Nytro]

[h=2]folly/FBvector.h[/h] Simply replacing std::vector with folly::fbvector (after having included the folly/FBVector.h header file) will improve the performance of your C++ code using vectors with common coding patterns. The improvements are always non-negative, almost always measurable, frequently significant, sometimes dramatic, and occasionally spectacular.

[h=3]Sample[/h]

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folly::fbvector<int> numbers({0, 1, 2, 3});

numbers.reserve(10);

for (int i = 4; i < 10; i++) {

numbers.push_back(i * 2);

}

assert(numbers[6] == 12);

[h=3]Motivation[/h]

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std::vector is the stalwart abstraction many use for dynamically-allocated arrays in C++. It is also the best known and most used of all containers. It may therefore seem a surprise that std::vector leaves important - and sometimes vital - efficiency opportunities on the table. This document explains how our own drop-in abstraction fbvector improves key performance aspects of std::vector. Refer to folly/test/FBVectorTest.cpp for a few benchmarks.

Sursa: https://github.com/facebook/folly/blob/master/folly/docs/FBVector.md

[CosminAlexandru41]

Da sunt ok ... mici defecte dar este ok. multam nytro