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logosity / wait-any.clj

Created August 9, 2013 20:09

Block a caller on any number of long-running/non-terminating functions continuing when any one of them returns (the others will run to completion, or presumably get cleaned up by the calling context):

	;;; block caller until any one of the passed functions complets and return its result
	(defn wait-any [& fns]
	(let [p (promise)]
	(doseq [f fns] (future (deliver p (f))))
	(deref p)))

	;;; (wait-any #(do (Thread/sleep 4000) 1) #(do (Thread/sleep 2000) 2) #(do (Thread/sleep 3000) 3))
	;;; output: 2

logosity / immutability_and_safety_2.js

Created May 23, 2013 19:05

	//"safe" version:
	function listFruits(fs) {
	var fruits = [].concat(fs);
	fruits.sort();
	for(var i in fruits) {
	console.log(fruits[i]);
	}
	}

logosity / immutability_and_safety.clj

Created May 23, 2013 19:03

	(defn listFruits [fruits]
	(doall (map println (sort fruits))))
	(def fruits ["Banana", "Orange", "Apple", "Mango"])
	(listFruits fruits) ;prints Apple Banana Mango Orange each on their own line
	(println fruits) ;["Banana" "Orange" "Apple" "Mango"] yay!!

logosity / immutability_and_safety.js

Last active December 17, 2015 16:28

	function listFruits(fs) {
	fs.sort();
	for(var i in fs) {
	console.log(fs[i]);
	}
	}
	var fruits = ["Banana", "Orange", "Apple", "Mango"];
	listFruits(fruits); //prints Apple Banana Mango Orange each on their own line
	console.log(fruits); //["Apple", "Banana", "Mango", "Orange"] ouch!!

logosity / monitors.sh

Created January 15, 2013 20:43

toggle screen saver on and off on an xwindows-using linux machine (tested only on Ubuntu)

	#!/bin/bash

	case "$1" in
	on)
	/usr/bin/xset -display :0.0 dpms force on
	/usr/bin/xset -display :0.0 -dpms
	/usr/bin/xset -display :0.0 s off
	/usr/bin/xset -display :0.0 s reset
	;;
	off)

logosity / gita.sh

Created January 15, 2013 20:38

Run git commands in all sub directories of current directory.

	#!/bin/bash

	find_command="find . -mindepth 0 -maxdepth 1 -type d -print"
	git_command="git $*"

	for i in $($find_command \| sort)
	do
	[ -d $i/.git ] && echo ${i:2}: $(cd $i; $git_command 2> /dev/null)
	done

logosity / tail.sh

Created May 9, 2012 20:33

Tail Recursion in bash

	#!/bin/bash
	# warning you need to build in something to stop the loop
	# in practice, I used a kill file check before invoking the script again

	echo 'tail recursive bash ftw'
	sleep 10
	$0 &

	# if you didn't listen and ran this as-is, try:
	# killall tail.sh

logosity / learn_clojure.clj

Created April 27, 2012 20:56

Get this code running and you'll have everything you need...

	(use '[clojure.string :only (join)])
	(use '[clojure.data.json :only (read-json)])

	(defmacro google [& terms]
	`(map :url
	(get-in (read-json (slurp (str "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q="
	~(join \+ (map str terms))))) [:responseData :results])))

	(google learning clojure)
	(google learning clojure eclipse)

logosity / print-stack.clj

Created March 22, 2012 15:26

print out current stack in clojure

	;;; print out the stack at the point of invocation of the macro (and continue execution)
	;;;
	(defmacro print-stack []
	`(doseq [s# (.getStackTrace (Thread/currentThread))]
	(println s#)))

Bill Caputo logosity

tmux shortcuts & cheatsheet