Haumer

numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]

Haumer

const previewImageOnFileSelect = () => {
  // we select the photo input
  const input = document.getElementById('photo-input');
  if (input) {
    // we add a listener to know when a new picture is uploaded
    input.addEventListener('change', () => {
      // we call the displayPreview function (who retrieve the image url and display it)
      displayPreview(input);
    })
  }

Haumer

Sortable List in Rails

Context

Create a drag and droppable List in Rails

Resources

• acts_as_list
• SortableJS
• StimulusJS

Haumer

array = %w(
  1768
  1847
  1905
  1713
  1826
  1846
  1824
  1976
  1687

Haumer

string = "1-4 m: mrfmmbjxr
5-16 b: bbbbhbbbbpbxbbbcb
7-8 x: qxrxmxccxxx
9-11 k: kkkkkkktmkhk
8-12 g: sgwvdxzhkvndv
6-9 v: zvmvvmvvvd
8-19 f: ffffsplmfflffhtfrfj
5-16 p: pppppppppspppjpcp
2-3 w: wwmw
7-19 j: jjjjjjjjjjjjjjjjjjvj

Haumer

# 02-Flow-Array/01-Can-you-vote/
def allowed_to_vote?(age)
  # TODO: return (not print!) a boolean stating whether `age` is old enough to vote
  # NOTE: Use an if/else statment
unless age > 18
puts false
else
puts true
end

Haumer

require "date"

def greetings(name)
  "Welcome to London #{name}! I hope you enjoy it!"
end

# puts greetings("James")
# puts greetings("Nathan")

# def one_plus_one

Haumer

puts "----------------------------------------"
puts "-----Welcome to The Price is Right!-----"
puts "----------------------------------------"

puts "Guess the price of this wonderful imaginary product"

# computer picks a random number (generate random number)
computer_number = rand(1..100)

# ask the user to enter a number => gets.chomp

Haumer

require 'csv'
# 1. Greet/Welcome the user to the Christmas List program!
puts "(¯`·._(¯`·._(¯`·._(¯`·._(¯`·.__.·¯) _.·¯)_.·¯)_.·¯)_.·¯)"
puts "(¯`·._(¯`·._  Welcome to the Christmas List!  _.·¯)_.·¯)"
puts "(¯`·._(¯`·._(¯`·._(¯`·._(¯`·.__.·¯) _.·¯)_.·¯)_.·¯)_.·¯)"

options = [
  "list",
  "add",
  "delete",

Haumer

simple_form_array_input.rb

class ArrayInput < SimpleForm::Inputs::StringInput
  def input
    input_html_options[:type] ||= input_type

    existing_values = Array(object.public_send(attribute_name)).map do |element|
      @builder.text_field(nil, input_html_options.merge(value: element, name: "#{object_name}[#{attribute_name}][]"))
    end