pca2

Chapter2

A Pen by Carleton on CodePen.

License.

pca2

# return line number $1 from file $2
get_line () { sed -n "$1,0p" $2 ;  }

pca2

#return the containing directory of file 
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

pca2

log(){
  datestamp=$(date +%Y-%m-%d_%H:%M:%S)
  msg="$@"
  echo "[$datestamp]- $msg"
}

#call with: log <whatever msg you want>

pca2

// ex: 2016-12-28_230652


var now = new Date();
var dd = now.getDate();
var mm = now.getMonth()+1;
var yyyy = now.getFullYear();
var min = now.getMinutes();
var sec = now.getSeconds();
var hh = now.getHours();

pca2

require 'benchmark'

#at its most basic, it looks like this:
Benchmark.bm do |bm|
  bm.report {some code}
  bm.report {some other code}
end

#A more robust example
iterations = 5

pca2

#!/usr/bin/env ruby

def make_change(change_amount)
  #denominations to use. Could easily be made a parm.
  #Note that these are integers, not floats
  denominations = {
    Penny: 1,
    Nickel: 5,
    Dime: 10,
    Quarter: 25

pca2

#!/bin/bash
check_md5sum(){
  sums=$(md5sum $1 $2)
  file_1=$(echo $sums | awk '{print $2}')
  file_2=$(echo $sums | awk '{print $4}')
  checksum_1=$(echo $sums | awk '{print $1}')
  checksum_2=$(echo $sums | awk '{print $3}')
  if [[ "$checksum_1" == "$checksum_2" ]]; then
    echo "OK: $file_1 and $file_2 md5 Checksums Match"
    echo $checksum_1 $file_1

pca2

#! /usr/bin/env ruby
def flatize(array)
  error_msg = 'Method only accepts nested arrays of integers'
  raise ArgumentError, error_msg unless array.is_a? Array
  flattened_array = []
  array.each do |element|
    if element.is_a? Array 
     flattened_array += flatize(element)
    else
     raise ArgumentError, error_msg unless element.is_a? Integer

pca2

def return_min(array)
  min = array[0]
  for i in array
    if i < min
      min = i
    end
  end
return min
end