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C++26 Introduces Contracts for Preconditions and Postconditions

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A CppStories article provides an introduction to contracts, a feature slated for C++26 that lets developers express preconditions and postconditions in code. Preconditions describe what must hold true before a function runs, while postconditions describe what it guarantees on return. The piece explains how these checks help catch programming errors and document expected behavior. The source material available is limited to the article link and basic Hacker News metadata, so the full details of the feature's syntax and semantics are not included here.

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