tkersey

Remove file from git repository (history)

SOLUTION: This is the shortest way to get rid of the files:

1. check .git/packed-refs - my problem was that I had there a refs/remotes/origin/master line for a remote repository, delete it, otherwise git won't remove those files

2. (optional) git verify-pack -v .git/objects/pack/#{pack-name}.idx | sort -k 3 -n | tail -5 - to check for the largest files

3. (optional) git rev-list --objects --all | grep #{SHA_FROM_#_3} - to check what files those are

adomokos

class CarElement
  def accept(visitor)
    raise NotImpelementedError.new
  end
end

module Visitable
  def accept(visitor)
    visitor.visit(self)
  end

mattpodwysocki

Dr. Alan Kay explains when "object-oriented" was first used and what it means. [] (Meaning of "Object-Oriented Programming" According to Dr. Alan Kay (meaning of OOP objectoriented definition term notion meaning explanation what is)), document, page 721691
http://www.purl.org/stefan_ram/pub/doc_kay_oop_en (permalink) is the canonical URI of this page.
Stefan Ram
Dr. Alan Kay  on the Meaning of “Object-Oriented Programming”
(To link to this page, please use the canonical URI "http://www.purl.org/stefan_ram/pub/doc_kay_oop_en" only, because any other URI is valid only temporarily.)
E-Mail of 2003-07-23
Dr. Alan Kay  was so kind as to answer my questions about the term “object-oriented programming”.
Clarification of "object-oriented" [E-Mail]

wycats

Today, in Ruby, if I want to make a network request, I block

response = Net::HTTP.get("/post/1")

If I want to do multiple requests in parallel, I can use a thread per request

responses = ["/post/1", "/post/2"].map do |url|

JedWatson

I've developed a useful feature in KeystoneJS that lets you populate a relationship from either side, while only storing the data on one side, and am looking for feedback on whether it is something that could / should be brought back into mongoose itself. (It might be possible to add as a separate package but I suspect there'd be too much rewriting of mongoose internals for that to be a good idea).

I've added this as an issue in mongoose for consideration: #1888 but am leaving this gist in place because the examples are easier to read.

I've used Posts and Categories as a basic, contrived example to demonstrate what I'm talking about here; in reality you'd rarely load all the posts for a category but there are other real world cases where it's less unreasonable you'd want to do this, and Posts + Categories is an easy way to demo it.

The problem

The built-in population feature is really useful; not just for

thom-nic

/**
 * Find the longest class names in Spring.  
 * Also find FactoryFactory classes.
 * a goof-off project by @thom_nic
 */

import java.util.jar.*

defaultTasks 'longest', 'factoryfactory'

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)); 
};

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.

---

mlanett

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

donnut

TypeScript and currying

In functional programming you often want to apply a function partly. A simple example is a function add. It would be nice if we could use add like:

var res2 = add(1, 3); // => 4

var add10To = add(10);
var res = add10To(5); // => 15