kathgironpe

Originally published in June 2008

When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.

To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.

What to expect

Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.

kathgironpe

func ==(x: HashableType, y: HashableType) -> Bool {
    return x.isEqual(y.value)
}

struct HashableType: Hashable {
    
    let value: Any
    var hashValue: Int {
        return getHashValue()
    }

kathgironpe

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

kathgironpe

# Set variables in .bashrc file

# don't forget to change your path correctly!

export GOPATH=$HOME/golang
export GOROOT=/usr/local/opt/go/libexec
export PATH=$PATH:$GOPATH/bin
export PATH=$PATH:$GOROOT/bin

kathgironpe

// Media Queries in Sass 3.2
//
// These mixins make media queries a breeze with Sass.
// The media queries from mobile up until desktop all 
// trigger at different points along the way
//
// And important point to remember is that and width
// over the portrait width is considered to be part of the
// landscape width. This allows us to capture widths of devices
// that might not fit the dimensions exactly. This means the break

kathgironpe

#!/usr/bin/ruby

class Array 
   def sum
      inject( 0 ) { |sum,x| sum+x }
   end
   def sum_square
      inject( 0 ) { |sum,x| sum+x*x }
   end
   def *(other) # dot_product

kathgironpe

;(function(w, d, undefined){
  'use strict';

  var $ = function (e) {
    var firstChar = e.charAt(0);

    if (firstChar === '#') {
      return d.querySelector(e);
    } else if (firstChar === '.') {
      return d.querySelectorAll(e);

kathgironpe

HOWTO: Using FileMerge (opendiff) with Git on OSX

FileMerge (opendiff) can really come in handy when you need to visually compare merging conflicts. Other times it's just a nice visual way to review your days work.

The following method works by creating a simple bash script (git-diff-cmd.sh) that sets us up with the proper command line arguments for Git to pass off files to FileMerge.

kathgironpe

Check build status of a project on the command line

Install (copy & paste):

curl -sL raw.github.com/gist/1676577/travis.rb > ~/bin/travis \
  && chmod +x ~/bin/travis

gem install hub | tail -2
ruby -e 'require "json"' 2>/dev/null || gem install json

kathgironpe

#Model 

@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

#Rendering
response.should render_template(:index)

#Redirecting 
response.should redirect_to(movies_path)