(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 (and also Babashka/nbb)
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"→
(merr/-> 10 (+ 1) (- 1))
;; => 10
(merr/-> 10 ((fn [_] (merr/err))) (- 1))
;; => (merr/err)→>
(merr/->> 10 (+ 1) (- 1))
;; => -10
(merr/->> 10 ((fn [_] (merr/err))) (- 1))
;; => (merr/err)try
(merr/try (throw (ex-info "ERROR" {})))
;; => merr/err?Integration
clj-kondo
merr provies clj-kondo’s configuration and hooks. To import configurations, run the following command.
clj-kondo --no-warnings --lint "$(clojure -Spath -Sdeps '{:deps {com.github.liquidz/merr {:mvn/version "LATEST"}}}')"License
Copyright © 2018-2022 Masashi Iizuka
Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.
Can you improve this documentation? These fine people already did:
liquidz & Iizuka MasashiEdit on GitHub
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