Y Q?
5jt.com
5jt.com
Also converge/scan/over.
https://code.kx.com/q/ref/accumulators/
No mention of adverbs? One of the coolest features of the language IMO:
https://code.kx.com/q/ref/iterators/
> Republic of operators With a rich set of primitives you don’t want to memorise another operator precedence hierarchy. So q doesn’t have one.
This creates an impedance mismatch with the conventional math notation, and may lead to some stupid errors, but I can live with it.
> Prefix notation clarifies the common case where the result of one function is the argument of the next. Instead of writing sum[cos[2+first[list]]] write sum cos 2+first list.
It's a mix of prefix and infix (not counting qSQL which is eDSL).
Composing expressions backwards in the REPL is a little bit annoying at first.
Personally, I prefer postfix and think that it's the most natural for left-to-right input methods.