justin808

# Using these pry gems -- copy to your Gemfile
# group :development, :test do
#   gem 'awesome_print' # pretty print ruby objects
#   gem 'pry' # Console with powerful introspection capabilities
#   # pick either:
#      # using byebug, but has issues with Zeitwerk
#      gem 'pry-byebug' # Integrates pry with byebug
#
#      # using default ruby debuggger
#      gem 'pry-stack_explorer'

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

btroncone

RxJS 5 Operators By Example

⚠️ UPDATE: I have moved the contents of this gist plus more to http://www.learnrxjs.io and https://github.com/btroncone/learn-rxjs. For expanded examples, explanations, and resources, please check out this new location!

A complete list of RxJS 5 operators with easy to understand explanations and runnable examples.

Table of Contents

• buffer
• bufferCount
• bufferTime

juno

# Custom log formatter module for rails_12factor
#
module CustomLogFormatter
  # Custom formatter for development environment.
  #
  # Examples
  #
  #   # in controller
  #   logger.error(self.class) { 'This is a error message' }
  #   logger.info { 'This is a info message' }

rogerleite

require "csv"
require "date"

puts CSV::HeaderConverters.keys.inspect # => [:downcase, :symbol]

# Add new header converter
CSV::HeaderConverters[:remap] = lambda do |raw_value|
  raw_value = raw_value.to_sym
  case raw_value
  when :country

skanev

Hacky syntax highlighting in git diff

Normally git diff would color additions green and deletions red. This is cool, but it would be even cooler if it adds syntax highlighting to those lines. This is a git pager that does so.

It parses the diff output and picks up the SHAs of files with additions and deletions. It uses [CodeRay][coderay] to highlight each file and then it extracts the lines that are shown in the diff. It then uses [term/ansicolor][color] to make a gradient from the CodeRay color and the diff color (red for deletion, green for addition) and uses it to replace the original.

I tried using rugged instead of shelling out to git show – it was faster overall, but it did incur a noticeable start up time.

Check out the image below for a demo.

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.

---

itzg

import javax.sql.DataSource;

import org.junit.runner.RunWith;
import org.skife.jdbi.v2.DBI;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.TestExecutionListeners;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.support.DependencyInjectionTestExecutionListener;

Iristyle

ECHO OFF
cd /d %~dp0
for /f "tokens=2* delims= " %%F IN ('vagrant status ^| find /I "default"') DO (SET "STATE=%%F%%G")

ECHO Close this window if it remains open, and http://localhost:8081 is responsive

IF "%STATE%" NEQ "saved" (
  ECHO Starting Vagrant VM from powered down state...
  vagrant up
) ELSE (

piscisaureus

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this: