boddhisattva

Setting this up took quite a bit of time and research for me, so just thought of sharing the learnings along the way that led to a working setup.

• Initial error that I was getting with running System tests in Rails 6

  System test integration requires Rails >= 5.1 and has a hard dependency on a webserver and `capybara`, please add capybara to your Gemfile and configure a webserver (e.g. `Capybara.server = :webrick`) before attempting to use system tests.

  • since the error above says specify Capybara in the Gemfile, a part of my Gemfile looked like below:

boddhisattva

Steps -

• Create the filename.rb file for which you’d like to create a filename_spec.rb
• Run the command rspec --init from the same working directory as to where you have filename.rb
• the above command will create a .rspec file for you
• It will create a new spec directory within which you need to place your specs
• It will create spec_helper.rb where you need continually require the ruby files that you would want to write specs for
• Create the filename_spec.rb within the spec directory
• [optional] Edit the .rspec file to add the option: --format documentation
• The above addition gives your running tests more readability as to what they do or what they stand for when they are run.

boddhisattva

SE No	Command	Action
1	cmd + option + down arrow	Go to Definition(a new feature in ST3)
2	cmd + ctrl + g	Select all occurrences of a word within a file at once
3	cmd + d	Selects the next occurence of the same word
4	Hold cmd key and click on multiple lines to get multiple cursors	Allows for editing multiple things at a time
5	cmd + ctrl + p	Open a project(once saved via Project(Prj) -> Save Prj as)
6	cmd + ]	Indents the highlighted code towards the right
7	cmd + [	Indents the highlighted code towards the left
8	cmd + r	Search for a method

boddhisattva

guard :minitest, test_folders: '.' do
  watch(%r{^(.*/)?([^/]+)\.rb$})  do |match_data|

    test_file = if match_data[2].include? "test"
                  match_data[2].split('_').first
                else
                  match_data[2]
                end

    "./#{test_file}_test.rb"

boddhisattva

require 'rspec/autorun'

class Person

  def initialize(first_name: , middle_name: nil, last_name: )
    @first_name = first_name
    @middle_name = middle_name
    @last_name = last_name
  end

boddhisattva

defmodule DNA do
	@nucleotides %{?A => ?U, ?C => ?G, ?G => ?C, ?T => ?A }
  	
  	@doc """
  	Transcribes a character list representing DNA nucleotides to RNA

  	## Examples
	
  	iex> DNA.to_rna('ACTG')
  	'UGAC'

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defmodule RNATranscription do
  @guanine ?G
  @adenine ?A
  @cystosine ?C
  @uracil ?U
  @thymine ?T

  @doc """
  Transcribes a character list representing DNA nucleotides to RNA

boddhisattva

defmodule RNATranscription do
  @guanine "G"
  @adenine "A"
  @cystosine "C"
  @uracil "U"
  @thymine "T"

  @doc """
  Transcribes a character list representing DNA nucleotides to RNA

boddhisattva

Elixir syntax highlighting example

 list = [1, 2, 3]
 [a, b, c] =  list
 
 def foo do
   IO.puts "foo"
 end

boddhisattva

From Dave Thomas' course, trying Supervisors in IEx wrt learnings from the chapter - No Mr Dictionary, I expect you to Die

For the code changes here: https://github.com/boddhisattva/e4p/blob/using-supervisors-with-dictionary/game/dictionary/lib/dictionary/word_list.ex#L12-L14 or

defmodule Dictionary.WordList do
  @moduledoc """
  Documentation for WordList.