Q by Puzzles

The q language favors terse code that exploits the iteration implicit in the primitives.

Accustomed to analyze problems into loops, tests, and cases? The shift to array thinking can be a challenge. Play is an excellent way to explore new techniques.

Q by Puzzles studies array-oriented programming techniques in the context of simple problems. They explore distinctive language features in some depth.

Use them to train your brain for q.

problem	solution features	code lines
12 Days of Christmas	Map a simple data structure to a complex one Index At with nested indexes Amend and Amend At to make changes at depth	2
ABC Problem	Search a tree of possibilities, stop when found recursion Each right Index At with nested indexes	3
Abundant Odds	Find values in a series that pass a test Each, Do, and While iterators composition	7
Four is Magic	Convergence and finite-state machines Converge iterator composition Index, Index At	7
The Name Game	Make substitutions in a string or list of strings projection ssr Amend At Do and Over iterators	5
Summarize and Say	Analyze a dictionary of results; map between dictionaries composition hash dictionary Do iterator reverse lookup iterator syntax	7
Word Wheel	Examine the differences between dictionaries compile test results, and index into them composition parallelization	12