What Does Emplace Do in C++?

The map::emplace() is a built-in function in C++ STL which inserts the key and its element in the map container. It effectively increases the container size by one.

What is the use of emplace?

vector emplace() function in C++ STL. The vector::emplace() is an STL in C++ which extends the container by inserting a new element at the position. Reallocation happens only if there is a need for more space. Here the container size increases by one.

What is emplace in stack?

stack::emplace()

This function is used to insert a new element into the stack container, the new element is added on top of the stack.

Sarah Jenkins

Sarah Jenkins

Senior Technology Editor & AI Specialist

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.