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A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.


Index:

View all_aws_lambda_modules.txt
# module list (generated by listmodules.py)
#
# timestamp='20160226T200954Z'
# sys.version='2.7.10 (default, Dec 8 2015, 18:25:23) \n[GCC 4.8.3 20140911 (Red Hat 4.8.3-9)]'
# sys.platform='linux2'
# platform='Linux-4.1.13-19.31.amzn1.x86_64-x86_64-with-glibc2.2.5'
#
BaseHTTPServer
Bastion
CDROM
View bash_trap_template.sh
#!/bin/bash
set -u # Check unset variables only
#set -ue # Check unset variables. Exit on error
LANG=C
# Trap signals
trap_HUP() {
echo "Trap HUP signal."
exit 1
}
View everytimezone.coffee
# Two things are important to note:
#
# 1) The code is fugly, because it was a JavaScript/iPad experiment.
# I know that it is ugly, so pretty please don't comment on that part.
# 2) I tried to use as many CoffeeScript features as possible,
# including but not limited to list comprehensions,
# heredocs, destructuring assignment and also the "do" operator
#
# I welcome comments about stuff that is not CoffeeScripty enough, or what I should
# write differently.
View post.md

GeoPlanet data with ancestor chain cache imported in 10 minutes

Yahoo! provides its GeoPlanet data as three separate TSV files, available for download here.

That's a database with some 17 million records:

  • 5.7 million records: locations (aka places).
  • 2.2 million records: alternative names for each place (aka aliases).
  • 9.6 million records: matrix of neighbourhoods per place (aka adjacencies).
View registrations_controller.rb
class Api::RegistrationsController < Api::BaseController
respond_to :json
def create
user = User.new(params[:user])
if user.save
render :json=> user.as_json(:auth_token=>user.authentication_token, :email=>user.email), :status=>201
return
else
View spec_features_samplefeature.rb
require 'spec_helper'
feature "Login" do
scenario "remembered user" do
password = "12345678"
user = create(:user, password: password)
access_protected_page_should_ask_to_login
current_path.should eq login_path
View summary.md

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:

View bm_throw_raise.rb
require 'benchmark/ips'
Benchmark.ips do |x|
x.report(:raise_rescue) do
begin
raise ArgumentError
rescue ArgumentError
end
end