Removal Algorithms

An overview of the key C++ standard library algorithms for removing objects from containers. We cover remove(), remove_if(), remove_copy(), and remove_copy_if().

Ryan McCombe
Updated
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Questions & Answers

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Remove Elements Without Surplus
How can I remove elements from a container without leaving surplus elements at the end?
Remove vs Erase
What is the difference between std::remove() and std::erase() in C++?
Memory Management with std::remove()
How do I handle memory management when using std::remove() with dynamic arrays?
Remove and Erase in std::map
How do I remove elements from a std::map using the remove-erase idiom?
Remove with Multiple Conditions
How can I remove elements from a container based on multiple conditions using std::remove_if()?
Remove Copy with Custom Comparator
Is there a way to use remove_copy_if() with a custom comparator function?
Remove Elements from Ordered Containers
How do I remove elements from a std::set while maintaining its sorted property?
Remove and Erase in std::deque
How do I remove elements from a std::deque using the remove-erase idiom?
Efficiently Remove Duplicates
How do I efficiently remove duplicate elements from a container using std::ranges::remove()?