How C++23 changes the way we write code
summary
C++23 claims to finish C++20 while adding a few punchy, practical features: std::expected provides value-or-error returns that propagate through algorithms (accumulate example) without exceptions, supports variant-based error stacks and monadic chaining; std::mdspan delivers a non‑owning multi‑dimensional view with pluggable layouts (row/column/tiled) so scientific arrays and Fortran interop avoid copies and awkward pointer hacks; deducing this removes quad‑overloads, simplifies CRTP and enables recursive lambdas; std::print wraps std::format, fixes Unicode and stream ergonomics. Feature work happens during the COVID‑19 redesign.
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chapters (7)
- 0:00Introduction
- 4:20Philosophy of new features
- 7:15Filtering C++23 features
- 19:44Deducing this
- 42:30Std::expected
- 1:01:29Mdspan
- 1:22:01Print and conclusion
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