PSA: target pragmas won't work on the new g++-13 compiler on CF
A PSA about GCC 13 on Codeforces rejecting target pragmas, why the issue appears, and what changed in later GCC versions.
programming-languages
Avoiding temporaries - generalizing i++ using std::exchange
A discussion and generalization of post-increment through std::exchange, with examples in recurrences, GCD code, lazy updates, moves, locks, and iterators.
The Boost C++ library in competitive programming
The Boost C++ library and examples of what it would give competitive programmers beyond the standard library.
Writing C++ like Python: tricks Python doesn't want you to know
A collection of modern C++ tricks that make code succinct and clean, from negative indexing and ranges to lambdas and compact utilities.
On using C on Codeforces (and some compiler update requests)
A discussion of using C on Codeforces.