Software Safety

C++26 Contracts: Introduction to Preconditions and Postconditions

C++ Stories introduces C++26 contracts: pre() and post() on function declarations and contract_assert() inside functions, why they beat assert, the ignore/observe/enforce/quick-enforce evaluation semantics, compiling examples with GCC, const parameters in postconditions, avoiding side effects in predicates, predicate cost, and why contracts are not a replacement for input validation.

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