Counting Algorithms

An introduction to the 5 main counting algorithms in the C++ standard library: count(), count_if(), any_of(), none_of(), and all_of()

Ryan McCombe
Updated
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Questions & Answers

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How to Count Elements in a Custom Container Using std::ranges::count()
How can I count elements in a custom container using std::ranges::count()?
How to Count Elements in a Multi-Dimensional Container
How do I count elements in a multi-dimensional container?
Using Member Functions as Predicates with std::ranges::any_of()
How can I use std::ranges::any_of() with a member function that requires parameters?
Performance of std::ranges Algorithms vs Traditional Loops
How do std::ranges algorithms compare with traditional loops in terms of performance?
Customizing Predicates for std::ranges::count_if()
How can I customize the behavior of std::ranges::count_if() for specific data types?
Using std::ranges Algorithms with Container Views
How do std::ranges algorithms interact with container views like std::span or std::string_view?
Real-World Examples of Using std::ranges::none_of()
What are some real-world examples of using std::ranges::none_of() in software development?