Ruby Programming Examples

blabla

ruby

# Hello World Program in Ruby
puts "Hello World!";

ANis

ruby

# Hello World Program in Ruby
require 'uri'
require 'net/http'
require 'json'
require 'ostruct'

module Heroku
  module Addons
    class Addon
      attr_accessor :name

      def initialize(attrs)
        @name = attrs['name']
      end
    end

    class AddonPlan
      attr_accessor :description, :price, :unit

      def initialize(attrs)
        @description = attrs['description']
        @price = attrs['price']['cents'] / 100.0
        @unit = attrs['price']['unit']
      end

      def full_price
        "$#{'%.2f' % price}/#{unit}"
      end
    end

    class Client
      def initialize
        uri = URI.parse("https://api.heroku.com/")
        @http = Net::HTTP.new(uri.host, uri.port)
        @http.use_ssl = true if uri.scheme == 'https'
        @headers = {
          'Accept' => 'application/vnd.heroku+json; version=3'
        }
      end

      def request(path, headers={})
        response = @http.get(path, @headers.merge(headers))
        JSON.parse response.body
      end
    end

    @client = Client.new

    # Loads all the available addons from Heroku
    def self.all
      @client.request('/addon-services').map { |addon| Addon.new(addon) }
    end

    def self.plans(addon)
      @client.request("/addon-services/#{addon}/plans").map { |plan| AddonPlan.new(plan) }
    end
  end
end
#########################################################################################

addons = Heroku::Addons.all
addons.each do |addon|
  name = addon.name
  plans = Heroku::Addons.plans(name)
  
  puts name
  plans.sort_by(&:price).each do |plan|
    puts "  #{plan.description}: #{plan.full_price}"
  end
end

4123

ruby

server 41213
server 41214
server 41215
server 41216
server 41217
server 41217
server 41217
server 41217

Test

ruby

#until loop
counter = 1
until counter == 10
puts counter
counter +=1
end
puts counter

#until loop
i = 0
until i == 6
  i+=1
end
puts i


#while loop
counter = 1
while counter <11
  puts counter
counter +=1
end


#case example
user_input = $stdin.gets.chomp
user_input.downcase!
case user_input
  when 3
      puts "£££"
  when 2 
      puts "££"
  when 1
      puts "£"
end


#Case Example.
current_energy = 3

case current_energy
when 3
    puts "Energy is 3"
when 2
    puts "Energy is 2"
when 1
    puts "Energy is 1"
else 
    puts "Nil"
end

Execute Ruby Online

ruby

# @param {String} s
# @param {String} t
# @return {Boolean}
def is_anagram(s, t)
    hash = Hash.new(0)
    hash1 = Hash.new(0)
    s.each_char do |v|
        hash.store(v, hash[v]+1)
    end
    t.each_char do |v|
        hash1.store(v, hash1[v]+1)
    end
    p hash == hash1
end

is_anagram("rat","cat")

myproject101

ruby

# Hello World Program in Ruby
puts "Hello World!";

Execute Ruby Online

ruby

def majority_element(nums)
    p [] if nums.empty?
    hash =Hash.new(0)
    nums.each do |v|
        hash.store(v, hash[v]+1)
    end
    tmp = []
    hash.each do |key, value|
        p value
        if value > nums.length/3
            tmp << key
        end
    end
    p tmp
end

majority_element([1,2])

nokogiri

ruby

# Hello World Program in Ruby
require 'open-uri'
#require 'rubygems'
require 'nokogiri'

page = Nokogiri::HTML(open("https://en.wikipedia.org/"))
puts page.class

testapp

ruby

# Hello World Program in Ruby
puts "Hello World!";

Sintaxe de cjhamada de funções --------

ruby

larguraDaLinha = 40
str = '--> text <--'
puts str.ljust(larguraDaLinha)
puts str.center(larguraDaLinha)
puts str.rjust(larguraDaLinha)
puts str.ljust(larguraDaLinha/2) + str.rjust(larguraDaLinha/2)
    
#https://pt.stackoverflow.com/q/236001/101

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