Because C++ is my primary language, and I always work on my codebases alone, I dropped the standard library and implemented my own replacement. It's not at all

Because C++ is my primary language, and I always work on my codebases alone, I dropped the standard library and implemented my own replacement. It's not at all practical for most I'm sure, but it allows me to evolve the library with new revisions of the C++ standard without being absolutely fixed on backward compatibility. One of the things I did for safety is that all access methods of all of my containers will bounds check and throw on null pointer dereferences ... in debug and stable mode. And all of that will be turned off in the optimized release mode, for applications where performance is absolutely critical. The consistency is very important. Whenever I get a crash in a release mode, I can rebuild in debug mode and quickly find the issue. And for code that must be secure, I leave it in stable mode and pay the small performance penalty.