jmrr

val sqlContext = new org.apache.spark.sql.SQLContext(sc) // optional

val df = sqlContext.load("jdbc", Map(
          "url" -> "jdbc:mysql://<ip.address.your.db>/<table>?user=<username>&password=<pwd>",
          "dbtable" -> "<tablename>"))

df.select("<col1>","<col2>","<col3>").save("</path/to/parquet/file.parquet>","parquet")

//Alternatively, to save all the columns:

peterc

# not for production, obviously

def hash(str, length_of_hash = 20)
  added = str.codepoints.map(&:ord).each_slice(length_of_hash).inject do |a, b|
    a.map.with_index { |c, d| (c + (b[d] || 0)) % 256 }
  end

  added.map { |val| val.to_s(16) }.join
end

xmlking

export class EnumSymbol {
    sym = Symbol.for(name);
    value: number;
    description: string;

    constructor(name: string, {value, description}) {

        if(!Object.is(value, undefined)) this.value  = value;
        if(description) this.description  = description;

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

samgiles

// [B](f: (A) ⇒ [B]): [B]  ; Although the types in the arrays aren't strict (:
Array.prototype.flatMap = function(lambda) { 
    return Array.prototype.concat.apply([], this.map(lambda)); 
};

satyagraha

task showConfigurations << {
	new File("graph/configurations.dot").withWriter { out ->
		out.println "digraph configurations {"
		out.println "rankdir=BT;"
		configurations.all { con ->
			out.println "${con.name} [shape=box];"
			con.extendsFrom.each { ext ->
				out.println "${con.name} -> ${ext.name};"
			}
		}

DanHerbert

OBSOLETE

This entire guide is based on an old version of Homebrew/Node and no longer applies. It was only ever intended to fix a specific error message which has since been fixed. I've kept it here for historical purposes, but it should no longer be used. Homebrew maintainers have fixed things and the options mentioned don't exist and won't work.

I still believe it is better to manually install npm separately since having a generic package manager maintain another package manager is a bad idea, but the instructions below don't explain how to do that.

Fixing npm On Mac OS X for Homebrew Users

Installing node through Homebrew can cause problems with npm for globally installed packages. To fix it quickly, use the solution below. An explanation is also included at the end of this document.

pavelbinar

/* Random Boolean */

var randomNumber = Math.random() >= 0.5;
console.log(randomNumber);

ara303

Hey! Just to let you know there is a much better version of this script that doesn't require jQuery here:
https://gist.github.com/edadams/5ce1ec3d0b1f69e80724af7eb3b606f4

For posterity, and because this Gist got unexpectedly popular for a random code snippet, I will preserve the original below. Please do know that I've figured out a much better way to do this, which is above.

$(function(){ // shorthand document.ready()
    $('.make_lightbox').each(function(){ // this is just an element I let them click, it carries a series of data- attributes.
        $(this).on('click',function(){  // when clicked. this is the newer jQuery click() handler that's only in v1.8+ so that may be something to note.
            var lbArray = []; // create blank array.
            var arrayContents = {"width":$(this).data('width'), "height":$(this).data('height'), "low_res":$(this).data("lowres"), "high_res":$(this).data('highres')}; // make set of the data- attributes. 

VitToCode

Summary:  	A high-level language, primarily intended for numerical computations
Name:			octave
Version:		3.6.4
Release:		1.el6
#Epoch:			2
License:		GPL
Group:			Applications/Mathematics
URL:			http://www.octave.org
Source0:		ftp://ftp.gnu.org/gnu/octave/octave-%{version}.tar.bz2
Source1:		octave.png