Ruby Basics In 100 Lines

100行のコードのRuby Basics

Pythonのようなプログラミング言語にすでに精通している場合は、これを使用することをお勧めします。以下のコードを表示するか、 QuickStart.RBを試すことができます。
詳細については、https：//learnrubythehardway.org/bookをチェックすることをお勧めします。

実行方法

ターミナルタイプRuby Quickstart.rb 。

コード

 #   
#   Basics of Ruby!
#   - @rahulmfg
#   - www.rahulm.me
#

# Print 
puts "Welcome, let's code in Ruby!" # this will add new line(n)
print "So, what is your name? " # this will not add a new line(n)

# STD Input
your_awesome_name = $stdin . gets . chomp # google about $stdin.gets.chomp vs gets.chomp!

# Printing var w/ string
puts "Yo, #{ your_awesome_name } "

# Hash
about = { "name" => your_awesome_name , "id" : 1 , "key" : "qKsa1O" }

# Simple Module
module Emoji
    def Emoji . smile ( )
        return "?"
    end

    def Emoji . cry ( )
        puts "?"
    end
    ABOUT = "My job is to print an Emoji"
end

puts Emoji :: ABOUT
smile = Emoji . smile ( )
puts smile

Emoji . cry ( )

# IF Statement
if true
    puts "Hey, I'm from IF"
end

# IF-ELSE
puts "Do you like Ruby so far? n 1 - Yes n 2 - No"
print '> '
answer = $stdin . gets . chomp . to_i # google about ruby to_i

if answer == 1
    puts Emoji . smile ( )
elsif answer == 2
    Emoji . cry ( )
else
    puts "Mmm..."
end

# FOR Loop
numbers = [ 1 , 2 , 3 , 4 ]
words = [ "Random" , "Air" , "Hot" , "Ufo" , "Like" ]

for number in ( 0 .. 10 )
    puts number
end

numbers . each do | number |
    puts number
end

words . each { | word | puts word }

# While Loop
i = 0
while i < words . length
    puts words [ i ]
    i += 1
end

# Class
class MoodEmoji
    attr_reader :mood # check https://stackoverflow.com/a/5046915/2182940
    
    def initialize ( mood )
        @mood = mood
    end

    def emoji ( )
        if @mood == "happy"
            puts "You're happy ??"
        elsif @mood == "sad"
            puts "You're sad ☹️?"
        else
            puts "?"
        end
    end
end

happy = MoodEmoji . new ( "happy" )
sad = MoodEmoji . new ( "sad" )

happy . emoji ( )
sad . emoji ( )