Summary
This episode explores C++20's new for loop init-statements, an extension to range-based for loops that allows variable declarations before the loop condition. Jason demonstrates how this feature enables both tracking position within a range-based loop and, more importantly, solving object lifetime issues. By placing temporary objects in the init-statement, their lifetime extends throughout the entire loop, preventing dangling references that could otherwise occur when iterating over temporary collections returned from functions.
Related C++ Standard Sections
This episode covers topics found in these sections of the C++ standard:
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[specialized.algorithms.general]51% match