The standard library is better documented

From: Niilo Huovila (niilo.j.huovila_at_[hidden])
Date: 2023-12-02 00:35:42

By better I mean cppreference.com. There's a page for pretty much 
everything in the standard library. Related pages are linked. The 
preconditions and behavior of functions are specified. Consequentially I 
come to Boost only when the standard library doesn't do enough. If you 
are going to compete with the standard library instead of just 
supplementing it, you need outstanding documentation.