This is a decent overview, but misses a few nice things. Interested readers should not assume it is exhaustive (generally something they should not assume..)

E.g., because the feature is so rare (controversial?) it doesn't get mentioned much, but you can also define your own operators in Nim. So, if you miss bitwise `|=` from C-like PLangs, you can just say:

    proc `|=`*[T,U](a: var T, b: U) = a = a or b

Of course, Nim has a built in `set[T]` for managing bit sets in a nicer fashion with traditionally named set theoretic operators like intersection, union, etc. https://github.com/c-blake/procs makes a lot of use of set[enum] to do its dependency analysis of what Linux /proc files to load and what fields to parse, for example (and is generally much faster than C procps alternatives).

This same user-defined operator notation for calls can be used for templates and macros as well which makes a number of customized notations/domain specific languages (DSLs) very easy. And pragma macros make it easy to tag definitions with special compile-time behaviors. And so on.