What is oju? A Mysterious Sauce used as a special ingredient sourced (some would say pilfered) from an advanced civilization thirty years in the future (far beyond the late 1980's).

cl-oju: a few Clojure idioms I missed from Common Lisp.

There are many more comprehensive utility libraries out there, such as Serapeum. This one is focused on a fairly narrow goal: to provide fairly simple equivalents to core Clojure functions. Since I frequently reach for (and write) these out of habit, I wanted a place to put them. I haven't needed to worry too much about comprehensiveness or performance, though PRs to improve either will be gratefully reviewed.

Note that I stick to the functional interface of familiar Clojure functions, but do not worry about immutable data structures or laziness in this library.

If you're new to Common Lisp coming from Clojure, it may be better to learn "the Common Lisp way" of doing things than to rely on these functions; but this library can still be a reference point to see a way of doing things you're used to.

Supported operators:

comment
comp
drop
filter
frequencies
group-by
interleave
interpose
juxt
neg?
not=          (based on #'EQUAL)
partial
partition-all
partition-by
partition-n   (called "partition" in Clojure)
pos?
rand-int
rand-nth
range
repeatedly
slurp
sort-by
spit
str
take
take-while

This is not on Quicklisp (yet). Check it out from source and put it in LISP_HOME. Then,

(ql:quickload 'cl-oju)

Only tested in SBCL, but the code is general enough that it should work in any compliant Common Lisp implementation. make test should be sufficient to run the tests. You can also run them in Docker (make docker), which is what the CI for this project does. You'll obviously need SBCL, make and Docker installed for this.