It is originally from lisp, it means predicate, designates testing for conditions.
https://www.geeksforgeeks.org/predicates-in-lisp/ On Thursday, March 20, 2025 at 02:25:23 PM EDT, Marcos Cruz <pik...@programandala.net> wrote: Just out of curiosity, what does the "p" means in `stringp`, `intp`, `floatp`, `functionp`, `objectp`, `arrayp`…? When I found those useful functions by the first time, I wondered why they were not called, say, `is_string`, `is_int`, `is_float`, `is_array`…? -- Marcos Cruz http://programandala.net