1.2 Overview of Loopless Utilities

Here's descriptions of all the (informal) categories of operators provided by Loopless. See Reference, for comprehensive documentation of all these utilities. See Quick Reference, for a table showing at a glance all the operators.

mapcar-like Functions

These are mapping functions following the lead of mapcar and friends. They are analogous to mapc/mapcar/mapcan and mapl/maplist/mapcon for iteration (and possible accumulation of values into a list) over alists, plists, vectors and integers. See MAPCAR-like Functions.

dolist-like Macros

These are iteration macros following the lead of dolist and friends. They are analogous to dolist and dotimes, but for the conses of a list, alists, plists and vectors. There's also dotimes*, which is just like dotimes but without an iteration variable. See DOLIST-like Macros.

Collection Macros

These macros, collecting and with-collectors, provide easy and efficient collection of values into one (or multiple) list(s). They were copied from the cl-utilities library but I added support for nconc-style accumulation. See Collection Macros.

for*

This macro lets you use a subset of loop's for clause to step variables in conjunction with any looping construct whatsoever. “for-as-arithmetic” and “for-as-equals” are supported. See FOR*.

while*

This macro executes an implicit tagbody repeatedly while a condition holds true. See WHILE*.

compose

This function takes a list of functions and returns a function that will pass its argument “through” those functions when called. It was copied from the cl-utilities library and is included in Loopless because it's very useful for the mapcar-like functions, in particular. See COMPOSE.