=> (require '[merr.core :as merr])
nil
;; for ClojureScript
;; (require '[merr.core :as merr :include-macros true])
=> (merr/let +err+ [foo 1
=> bar (merr/err)
=> baz (* bar 2)]
=> {:+err+ +err+ :foo foo :bar bar :baz baz})
{:+err+ (merr/err), :foo 1, :bar nil, :baz nil}Liking cljdoc? Tell your friends :D
merr
Minimal and good enough error handling library for Clojure/ClojureScript
This library is based on "Good Enough" error handling in Clojure.
Concept
-
Easy to imagine behavior
-
Minimum to remember
-
All usage and examples are documented in docstring
-
Usage
error record
(defrecord MerrError [type message data cause])let
=> (merr/let err [a 10
=> b (inc a)
=> c (inc b)]
=> (if err
=> (merr/message err)
=> (str "c = " c)))
"c = 12"
=> (merr/let err [a 10
=> b (merr/err {:message "ERROR"})
=> c (inc b)]
=> (if err
=> (merr/message err)
=> (str "c = " c)))
"ERROR"err-if
=> (merr/err-if 1 even?)
1
=> (merr/err-if 1 odd? {:message "ERROR"})
(merr/err {:message "ERROR"})→
=> (merr/-> 10 (+ 1) (- 1))
10
=> (merr/-> 10 ((fn [_] (merr/err))) (- 1))
(merr/err)
=> (merr/-> 10 (merr/err-if even?) (- 1))
(merr/err)
=> (merr/-> 10 (merr/err-if odd?) (- 1))
9→>
=> (merr/->> 10 (+ 1) (- 1))
-10
=> (merr/->> 10 ((fn [_] (merr/err))) (- 1))
(merr/err)License
Copyright © 2018-2020 Masashi Iizuka
Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.
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