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emplace vs push c++

BreadCode answered on May 12, 2021 Popularity 6/10 Helpfulness 1/10

answer emplace vs push c++

emplace vs push c++

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push() adds a copy of an already constructed object into the queue as a 
parameter, it takes an object of the queue's element type.

emplace() constructs a new object in-place at the end of the queue. It takes 
as parameters the parameters that the queue's element types constructor takes.

If your usage pattern is one where you create a new object and add it to the
container, you shortcut a few steps (creation of a temporary object and copying
it) by using emplace().

Popularity 6/10 Helpfulness 1/10 Language cpp

Source: stackoverflow.com

Tags: c++ emplace push

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