vaz

> // There are two different ways to define functions in javascript.
> // Functions can be named, or anonymous.
> // The named function syntax looks more like a C- or Java-style "statement":
> function f(){ }
undefined
> // Notice it evaluates to "undefined".  I'll come back to this in a sec.
> // The named function syntax binds the function to a local variable with the given name.
> f
[Function: f]
> // It also actually names the function object:

vaz

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <cmath>

using namespace std;


typedef void (*sorting_fun)(int[], int);

vaz

// the self-calling function is a
// Javascript "module" pattern for
// not leaking stuff into global scope:
(function(){
  // simple closure example

  function loglater(message){
    return function logger(){
      console.log(message); // references outer function's argument

vaz

# find primes up to n
def sieve(n)
  return n if n == 2
  s = (3..n).step(2).to_a
  s.each { |i| s.reject! { |j| j != i && j % i == 0 } }
end

def new_sieve(n)
  (s = maybe_primes(n)).each { |i| s.reject! { |j| j != i && j % i == 0 } }

vaz

// ----
// Sass (v3.4.12)
// Compass (v1.0.3)
// ----

// RANGES
// We use these functions to define ranges for various things, like media queries.
@function lower-bound($range){
  @if length($range) <= 0 {
    @return 0;

vaz

showAllFiles ()
{
    local new old=`defaults read com.apple.finder AppleShowAllFiles`;
    if [ "$old" = "TRUE" ]; then
        new="FALSE";
    else
        new="TRUE";
    fi;
    defaults write com.apple.finder AppleShowAllFiles $new;
    echo -n "com.apple.finder AppleShowAllFiles = ";

vaz

$ bash test.sh
This is what happens now. Simple Gemfile:
source 'https://rubygems.org'
gem 'listen'

Updating bundle...
Fetching gem metadata from https://rubygems.org/............
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies...

vaz

Intro to HTTP

Here are the lecture notes from May 16, 2016: Intro to HTTP

What is HTTP

HTTP is Hyper-Text Transfer Protocol.

OK, What is Hyper-Text?

vaz

# basic sinatra app showing some use of sessions to handle
# some (insecure) authentication

require 'sinatra'

# enable default sessions support
# sessions are "like hashes" and get serialized (stringified) and
# stored directly in a session cookie.
# Sinatra (actually a Rack sessions extension) handles this for you
enable :sessions

vaz

Acceptance Testing

2016-05-18 breakout by Vaz

This breakout covered:

• Using RACK_ENV in the conventional way to use a different db for development than for tests
• Adding RSpec to the skeleton with a (very) basic model spec
• Introduction to acceptance testing and Capybara, focusing on form submission for creating new records