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Tencent Cloud Developer
Tencent Cloud Developer
Aug 9, 2021 · Fundamentals

Performance Evaluation and Implementation Overview of C++ Exceptions

Benchmarking C++ exceptions against error‑code handling reveals that frequent throws incur more than tenfold slowdown due to libc++ runtime functions like __cxa_allocate_exception and stack unwinding, while rare exceptions and empty try blocks add negligible overhead, highlighting the trade‑off between safety and performance.

BenchmarkExceptionPerformance
0 likes · 13 min read
Performance Evaluation and Implementation Overview of C++ Exceptions
Laravel Tech Community
Laravel Tech Community
Jun 17, 2021 · Databases

PDO::errorCode – Retrieve the SQLSTATE of the Last Database Operation

PDO::errorCode is a PHP method that returns the SQLSTATE code—a five‑character identifier defined by the ANSI SQL standard—representing the outcome of the most recent operation on a database handle, or NULL if no operation has been performed.

DatabasePDOSQLSTATE
0 likes · 1 min read
PDO::errorCode – Retrieve the SQLSTATE of the Last Database Operation