Emplace vs push c++

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().

Source: stackoverflow.com

Similar codes

4 votes290 views1 answer
Arduino uno hello world
C++
0 vote280 views1 answer
How to have a queue as a parameter in c++
C++
0 vote301 views1 answer
C++ write number to registry
C++
0 vote272 views1 answer
Declare a tab c++
C++
3 votes227 views3 answers
C vs c++ vs c#
C++
1 vote255 views1 answer
Why can not return char in cpp
C++
-1 vote269 views1 answer
Cod Cold War no recoil
C++
0 vote291 views2 answers
Round all columns in R dataframe to 3 digits
C++
0 vote274 views1 answer
Push_back a pair c++
C++
0 vote291 views1 answer
C++ enum rand
C++