robjens

Clojure Dependency Hell

Clojure and Java + Maven form a great powerhouse in anyone’s stack. How to spot and resolve conflicting software is something that puzzled me for a bit. There are a few techniques to employ:

Steps

The main 'go-to-guy' is lein deps :tree in the /path/to/project/root (read: where the project.clj file is). This will compile a dependency tree which lists conflicting software e.g.

robjens

For any scraping istandaarden.nl in Windows, this'll come in handy:

http://stackoverflow.com/a/12524960

This because JDK (slurp, or enlive or otherwise) chokes on the cert, it needs to be added following those steps (worked for me).

# select all container elements mandatory presence

robjens

Light Table IDE CodeMirror Additional Modes

Simply place the text as .js file named like that in either the C:\Program Files\LightTable\core\node_modules\codemirror\modes folder or Linux/Mac equivalent folder. Restart Light Table, it should work automatically but may not at first. Ensure the file saved has the proper extension (or set one up on user behaviors) and persist to disk. Close the file, then reopen it. It should have the syntax highlight of that language.

Find more at: https://codemirror.net/mode/

robjens

Math

Operator Precedence

Or formally titled Order of operations on wikipedia, it covers the topic that, in mathematics and most computer languages, multiplication is done before addition.

Example implicit operator precedence

2 + 3 × 4

robjens

(* Well at least it works now *)

module Types

open System
open System.IO
open System.Collections
open System.Collections.Generic
open System.Reflection
open System.Resources

robjens

#!/usr/bin/env boot

#tailrecursion.boot.core/version "2.5.1"

(set-env!
  :project      'petproject
  :version      "0.1.0-SNAPSHOT"
  :dependencies '[[tailrecursion/boot.task   "2.2.4"]
                  [tailrecursion/hoplon      "5.10.25"]]
  :out-path     "resources/public"

robjens

#!/usr/bin/env nodemon

Functional Literate CoffeeScript

Part of these names have been adjusted from the ones used in the orginal article, since afteral, I'm a Clojuran.

Based on:

• http://cedricruiz.me/blog/functional-coffeescript-for-the-impatient/

robjens

#!/usr/bin/env zsh

# New file location of CS generated
cs=${PWD}/${1:r:t}.coffee

# Resolve absolute path and also symbolic links on positional parameter 1 then
# pipe to the current directory and create a file with the same name but
# different extension. Drops a coffee file in Present Working Directory.
js2coffee -i 4 ${1:A} > $cs

robjens

###
Wisp homoiconic Clojure-like to JavaScript transpiler
language component for Nesh, the Node.js enhanced shell.
###

require 'colors'

wisp = require 'wisp'
compiler = require 'wisp/compiler'
log = require '../log'

robjens

; http://www.ietf.org/rfc/rfc3339.txt
; and http://www.odata.org/documentation/odata-version-3-0/abnf/

oneToNine = "01" / "02" / "03" / "04" / "05" / "06" / "07" / "08" / "09"
zeroToNine = "00" / oneToNine

oneToTwelve = oneToNine / "1" ( "0" / "1" / "2" )

oneToThirteen = oneToTwelve / "13"