>Data structures. Many high-level languages now have better basic data-structures than many devs could write, even if they know the theory. I would say that AL

>Data structures. Many high-level languages now have better basic data-structures than many devs could write, even if they know the theory. I would say that ALL high level languages have basic data structures, and that those data-structures are better then 99% of the data-structures that users would/could write. Just because to be included in the language the coding level is very very high.