steveklabnik

My summary of https://www.youtube.com/watch?v=IqrwPVtSHZI

TL;DR:

Rails has a library, ActiveSupport, which adds methods to Ruby core classes. One of those methods is String#blank?, which returns a boolean (sometimes I miss this convention in Rust, the ?) if the whole string is whitespace or not. It looks like this: https://github.com/rails/rails/blob/b3eac823006eb6a346f88793aabef28a6d4f928c/activesupport/lib/active_support/core_ext/object/blank.rb#L99-L117

It's pretty slow. So Discourse (which you may know from {users,internals}.rust-lang.org) uses the fast_blank gem, which provides this method via a C implementation instead. It looks like this: https://github.com/SamSaffron/fast_blank/blob/master/ext/fast_blank/fast_blank.c

For fun, Yehuda tried to re-write fast_blank in Rust. Which looks like this:

tarruda

#!/bin/bash
# script for pyenv installation of pygtk3 in ubuntu 12.04
# Adapted from https://gist.github.com/mehcode/6172694

system_package_installed() {
	if ! dpkg -l | grep -q $1; then
		sudo apt-get install $1
	fi
}

stephenparish

Commit Message Conventions

These rules are adopted from the AngularJS commit conventions.

• Goals
• Generating CHANGELOG.md
  • Recognizing unimportant commits
  • Provide more information when browsing the history
• Format of the commit message
• Subject line

generalov

/* jslint node:true */
'use strict';

module.exports = function(grunt) {

    grunt.registerTask('default', [
        'serve'
    ]);

    grunt.registerTask('serve', [

hubertlepicki

source :rubygems

# We are not loading Active Record, nor Active Resources etc.
# We can do this in any app by simply replacing the rails gem
# by the parts we want to use.
gem "actionpack", "~> 4.0"
gem "railties",   "~> 4.0"
gem "tzinfo"

# Let's use thin

tmichel

Kir-Dev demó ötletek

Ide gyűjtjük össze a kivonulós demóval kapcsolatos ötleteket. Újat javasolni a következőképpen lehet:

• clone-zd le ezt a gistet
• módosítsd
• küld el nekem a (tomi.michel [majomfarka] gmail [pont] com) a diffet

Multiplayer tower defense

rgreenjr

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 

jordelver

Find the SD card device

In this case, the SD card is /dev/disk4. DO NOT get this wrong or you may destroy all the data on the wrong disk/card/drive.

diskutil list

/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *160.0 GB   disk0

1: EFI 209.7 MB disk0s1

pklaus

#!/usr/bin/env python

# found on <http://files.majorsilence.com/rubbish/pygtk-book/pygtk-notebook-html/pygtk-notebook-latest.html#SECTION00430000000000000000>
# simple example of a tray icon application using PyGTK

import gtk
 
def message(data=None):
  "Function to display messages to the user."