The map::operator= is a built function in C++ STL which assigns contents of a container to a different container, replacing its current content.
map1_name = map2_name
Parameters: The map on the left is the container in which the map on the right is to be assigned by destroying the elements of map1.
Return Value: This function does not return anything.
The map mp is : KEY ELEMENT 1 40 2 30 4 50 The map copymap is : KEY ELEMENT 1 40 2 30 4 50
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