Partition Algorithms

An introduction to partitions, and the C++ standard library algorithms that create them

Ryan McCombe
Updated
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Questions & Answers

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Partition vs Stable Partition Performance
How does the partition() algorithm differ from the stable_partition() algorithm in terms of performance?
Partitioning Custom Data Types
Can the partition() function be used with custom data types, and if so, how?
Determining Partition Size
How can I determine the size of each partition after using the partition() function?
When to Use partition_copy()
What are the use cases for partition_copy() over partition() or stable_partition()?
Understanding partition_point()
How does the partition_point() algorithm determine the boundary between partitions?
Safe Iterator Handling in partition_point()
How can I handle the iterator returned by partition_point() to avoid dereferencing issues?
Partitioning Without Random Access Iterators
Is it possible to use the partition() algorithm with containers that do not support random access iterators?
Alternatives to partition()
Are there any alternatives to using std::partition() or std::ranges::partition() that offer better performance or additional features?