priyankamk

Ruby Project

1. Make a folder for your project:

$ mkdir ruby_project

2. Getting started with bundler is easy! Open a terminal window and run this command:

$ gem install bundler

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Keybase proof

I hereby claim:

• I am priyankamk on github.
• I am priyankamukund (https://keybase.io/priyankamukund) on keybase.
• I have a public key ASD-9PAy4fVBtFeODCxYZjy6OFXGFBlzGUZJVoY0uCrtyQo

To claim this, I am signing this object:

priyankamk

How to add integer in an array using inject - reduce family.

ar =[1000000001, 1000000002, 1000000003, 1000000004, 1000000005]

ar.inject(0) {|sum, x| sum + x}

5000000015

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Comparing two values in an array of numbers.

ar = [1,2,1,2,1,3,2]

ar.group_by{|x| x}.values.map {|x| x.size/2 }.reduce(&:+)

2

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To check any error in your file

bundle exec rake rubocop:auto_correct

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When you do a pull request on a branch, you can continue to work on another branch and make another pull request on this other branch.

Before creating a new branch, pull the changes from upstream. Your master needs to be up to date.

Switch to master branch using:

git checkout master

priyankamk

Ruby command line arguments By Alvin Alexander. Last updated: June 3 2016 Ruby FAQ: How do I read command line arguments in a Ruby script (Ruby command line args)?

To read command line args in a Ruby script, use the special Ruby array ARGV to get the information you need. Here are a few examples.

1. Getting the number of command line args To get the number of command line arguments passed in to your Ruby script, check ARGV.length, like this:

quit unless our script gets two command line arguments

priyankamk

version: 2
jobs:
  build:
    docker:
      # specify the version you desire here
      - image: circleci/ruby:2.5.0-node-browsers
        environment:
          RAILS_ENV: test
          PGHOST: 127.0.0.1
          PGUSER: app-user

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GIPHY_API_KEY=some-awesome-key

priyankamk

~> rails c
Running via Spring preloader in process 54134
Loading development environment (Rails 5.2.2.1)

irb(main):001:0> ENV
=> { RAILS_ENV: "development }