Ruby Basics In 100 Lines

Ruby -Grundlagen in 100 Codezeilen

Wenn Sie bereits mit der Programmiersprache wie Python vertraut sind, empfehle ich Ihnen, dies zu tun. Sie können entweder den folgenden Code sehen oder QuickStart.rb versuchen.
Um mehr zu erfahren, empfehle ich Ihnen, sich https://learnrubythehardway.org/book anzusehen.

Wie man rennt

Im Terminaltyp Ruby QuickStart.rb .

Code

 #   
#   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 ( )