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C++26 Contracts: Introduction to Preconditions and Postconditions

The article introduces C++26 contracts, covering preconditions and postconditions — a long-anticipated language feature that allows developers to specify and enforce runtime conditions on function parameters and return values. This represents a significant step forward for error detection and code clarity in C++.

Background

C++ contracts (assertions) have been discussed and deferred across multiple standards cycles since C++20. The feature aims to bring compile-time and runtime assertion-based programming to the language, similar to concepts found in languages like Rust and Go.

Source
Hacker News (RSS)
Published
Oct 15, 2026 at 09:11 PM
Score
7.0 / 10