Ruby Basics

Ruby syntax

Practice

Solve last assignment

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Questions

Irb

Ruby

SublimeText 2

http://www.ruby-doc.org

Print hello world

Create world variables

Write them in files

def name(param1,param2,param3)

…code here…

end

Create a function that print world data

Name : string

Version : numeric

Time : time

Continents : array

Creatures : hash

Try double quoted strings, it is fun

Try using symbols

Use methods to capitalize keys

Check classes for existing variables

Add methods to objects

Add methods to existing classes

Create classes(world, human, animal, insect)

Initialize

attr_accessor

class Name

…code goes here…

end

If … end

If … else

If … elsif … else … end

Check for day/night in world

Unless

Case … when … else … end

Check for meal times in world

While … end

Until … end

For x in arr … end

Feed humans with animals

Block_given?

Yield

Block

Block with parameter

Burry dead humans

Dir

Pwd

Glob

Mkdir

Exists?

Open

Close

Enteries

each

• File

• Open

• Close

• Delete

• Readlines

• Rewind

• write

New libraries, modules …etc

Rails is a gem

Rails plugins are gems

Gem install rails

Gem update --system

Gem update

Gem install rails

http://rubygems.org/

Solve

http://projecteuler.net/problem=3

Read

http://guides.rubyonrails.org/getting_started.ht

ml

Practice (Plus)

http://railsforzombies.org/

The prime factors of 13195 are 5, 7, 13 and

29.

What is the largest prime factor of the

number 600851475143 ?