• About the project
  • Description
  • Current Leiningen coordinates
  • Example usage
• Namespaces
• Tests
• Project definition
  • Injected properties
  • Dependencies
    • Runtime
    • Development
  • Leiningen coordinates
  • Building this project
    • Testing
    • Working with the REPL
  • Leiningen project file
  • ClojureScript HTML harness
  • Accessing library version during runtime
    • Version namespace
  • Release history
  • Contributors
  • License

A small library providing composable, extensible string & date formatters and number parser helper functions for Clojure/Clojurescript. This library is the result of a thi.ng projectwide restructuring / dissolving of the thi.ng/common library.

Note: This library relies on the conditional reader syntax of recent Clojure & Clojurescript versions and therefore is not compatible with Clojure versions < 1.7.0…

[thi.ng/strf "0.2.4"]

(require '[thi.ng.strf.core :as f])

(f/parse-long "decafbad" 16)
;; 3737844653

(f/parse-int "w00t" 10 :fail)
;; :fail

(f/parse-float "3.1415926")
;; 3.1415926

(f/parse-float "w00t" :fail)
;; :fail

(f/format ["Rounded to 1/100th: " (f/float 2)] 3.1415926)
;; "Rounded to 1/100th: 3.14"

(f/format ["#" (f/hex 2) (f/hex 2) (f/hex 2)] 8 64 192)
;; "#0840c0"

(f/format-date (f/now))
;; "2015-05-23 01:43:21"

(f/format-date :mm-dd-yyyy (f/now))
;; "05/23/2015"

(keys f/date-formatters)
;; (:yyyy-mm-dd :yyyy-mm-dd-hh-mm-ss :dd-mm-yyyy :mm-dd-yyyy :dd-mm-yy :hh-mm-ss)

• thi.ng.strf.core

• TBD

0.2.4

[org.clojure/clojure "1.11.1"]

[org.clojure/clojurescript "1.11.121"]

[criterium "0.4.6"]

[com.cemerick/clojurescript.test "0.3.3"]

[lein-cljsbuild "1.1.8"]

This project is written in a literate programming format and requires Emacs & Org-mode to generate usable source code. Assuming both tools are installed, the easiest way to generate a working project is via command line (make sure emacs is on your path or else edit its path in tangle.sh):

git clone https://github.com/thi.ng/strf.git
cd strf
./tangle.sh src/*.org test/*.org

Tangling is the process of extracting & combining source blocks from .org files into an actual working project/source tree. Once tangling is complete, you can cd into the generated project directory (babel) and then use lein as usual.

The project.clj file defines an alias to trigger a complete build & tests for both CLJ & CLJS versions.

cd babel
lein cleantest

To build the Clojurescript version simply run lein cljsbuild test from the same directory. A small HTML harness for the resulting JS file is also located in that folder (babel/index.html), allowing for further experimentation in the browser.

Editing code blocks or files in Org-mode, then re-loading & testing changes is quite trivial. Simply launch a REPL (via lein or Emacs) as usual. Everytime you’ve made changes to an .org file, re-tangle it from Emacs (C-c C-v t) or tangle.sh, then reload the namespace in the REPL via (require 'thi.ng.strf... :reload) or similar.

(defproject thi.ng/strf "<<version>>"
  :description  "Extensible CLJ/CLJS string formatting"
  :url          "<<project-url>>"
  :license      {:name "Apache Software License 2.0"
                 :url "http://www.apache.org/licenses/LICENSE-2.0"
                 :distribution :repo}
  :scm          {:name "git"
                 :url "git@github.com:thi-ng/strf.git"}

  :min-lein-vesion "2.4.0"
  
  :dependencies [<<dep-clj>>
                 <<dep-cljs>>]

  :source-paths ["src"]
  :test-paths   ["test"]

  :profiles     {:dev {:dependencies [<<dep-criterium>>]
                       :plugins [<<dep-cljsbuild>>
                                 <<dep-cljs-test>>]
                       :global-vars {*warn-on-reflection* true}
                       :jvm-opts ^:replace []
                       :aliases {"cleantest" ["do" "clean," "test," "cljsbuild" "test"]}
                }}

  :cljsbuild    {:builds [{:id "simple"
                           :source-paths ["src" "test"]
                           :compiler {:output-to "<<cljs-artefact-path>>"
                                      :optimizations :whitespace
                                      :pretty-print true}}]
                 :test-commands {"unit-tests" ["phantomjs" :runner "<<cljs-artefact-path>>"]}}

  :pom-addition [:developers [:developer
                              [:name "Karsten Schmidt"]
                              [:url "https://thi.ng"]
                              [:timezone "0"]]])

<!DOCTYPE html>
<html lang="en">
  <head>
    <title><<lein-coords>> test</title>
  </head>
  <body>
    <script type="text/javascript" src="<<cljs-artefact-path>>"></script>
  </body>
</html>

The autogenerated namespace thi.ng.strf.version contains a single symbol version holding the version string defined above:

(use '[thi.ng.strf.version])

(prn version)
; "<<version>>"

I’ve got a fairly detailed roadmap and task list to implement over the coming months, but am always happy to receive feedback & suggestions and have issues filed. Once the core engine is more refined I’ll be gladly welcoming other contributions. Thanks for understanding!

This project is open source and licensed under the Apache Software License 2.0.