What would be useful is the definition of abstractions, breaking long chains of combinators and functions into manageable pieces, instead of playing one-liner c

What would be useful is the definition of abstractions, breaking long chains of combinators and functions into manageable pieces, instead of playing one-liner code golf. Meaningful function names rather than superfluous parameter names. For example (adapted from Wikipedia and untested): arrayaverage =: +/ % # arrayaverage 1 2 3 i.e. defining the average as the ratio (%) between the sum (+/) and the cardinality (#) of an array, with the advantage of being able to replace this function with a better version that doesn't fail miserably for an empty array.