Summary
This episode highlights two useful but often overlooked functions in the C++ standard library: std::next and std::exchange. Jason demonstrates how std::next provides a standard way to safely advance any type of iterator, even for container types that don't support random access iteration, avoiding common manual workarounds. He then explores std::exchange, which enables replacing a value while simultaneously retrieving the previous value in one operation, making code both more concise and potentially more efficient by leveraging move semantics.
Related C++ Standard Sections
This episode covers topics found in these sections of the C++ standard:
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[move.iterators.general]60% match -
[insert.iterators.general]59% match -
[insert.iterators]59% match -
[string.iterators]58% match -
[range.iter.op.next]40% match -
[utility.exchange]40% match