kaiguogit

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

kaiguogit

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

kaiguogit

require 'active_support/all'

@candidates = [
  {
    id: 5,
    years_of_experience: 4,
    github_points: 293,
    languages: ['C', 'Ruby', 'Python', 'Clojure'],
    date_applied: 5.days.ago.to_date,
    age: 26

kaiguogit

# Determine whether a string contains a SIN (Social Insurance Number).
# A SIN is 9 digits and we are assuming that they must have dashes in them
def has_sin?(string)
  /\b[0-9]{3}-[0-9]{3}-[0-9]{3}\b/.match(string) != nil
end

puts "has_sin? returns true if it has what looks like a SIN"
puts has_sin?("please don't share this: 234-604-142") == true

puts "has_sin? returns false if it doesn't have a SIN"

kaiguogit

def benchmark
  # Your benchmarking code goes here.
  start_time = Time.now
  yield
  end_time = Time.now
  end_time - start_time
end
 
# Be careful, pasting this into IRB will take a long time to print.

kaiguogit

require "pry-byebug"
@states = {
  OR: ['Oregon',['Salem', 'Portland']],
  FL: ['Florida',['Tallahassee','Jacksonville']],
  CA: ['California',['Sacramento','Los Angeles']],
  NY: ['New York',['Albany','New York']],
  MI: ['Michigan',['Lansing', 'Detroit']],
  WA: ['Wahsington',['Olympia','Seattle']],
  IN: ['Indiana',['Boise']]
}

kaiguogit

list = {'yvr' => 'Vancouver', 'yba' => 'Banff', 'yyz' => 'Toronto', 'yxx' => 'Abbotsford', 'ybw' => 'Calgary'}

# Why is it returning nil instead of first element of the list above
p list["yvr"]

kaiguogit

require 'benchmark'

# Sort the array from lowest to highest
def sort(arr)
  #bubble sort
  return arr if arr.length <= 1
  sorted = true
  while sorted
   sorted = false
   (arr.length-1).times do |i|

kaiguogit

# Save this file to your computer so you can run it 
# via the command line (Terminal) like so:
#   $ ruby shakil_the_dog.rb
#
# Your method should wait for user input, which corresponds
# to you saying something to your dog (named Shakil).
 
# You'll probably want to write other methods, but this 
# encapsulates the core dog logic
def shakil_the_dog

kaiguogit

# must be baller and either furnished or rent cheaper than 2100
def rent?(furnished, rent, baller)
 baller && (furnished || rent < 2100)
end

###
# Add your "test" ("driver") code below in order to "test drive" (run) your method above...
# The test code will call the method with different permutations of options and output the result each time.
# This way, you will be able to run the renter.rb file from the CLI and look at the output of your "tests" to validate if the method works.
# Without the test code, it will be hard for you to know if this method is working as it should or not.