Ruby

[object Object],[object Object],http://creativecommons.org/licenses/by/2.5/

Disclaimer: This ((might|will) be|is) a Technical Talk

Disclaimer: This might be a Technical Talk This will be a technical talk This is a Technical talk

aizat.who? ,[object Object],[object Object],[object Object],[object Object],[object Object]

My Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Ruby.is_a? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Ruby's History and Background ,[object Object],[object Object],[object Object],[object Object],[object Object]

Often people, especially computer engineers, focus on the machines . They think, "By doing this, the machine will run faster. By doing this, the machine will run more effectively. By doing this, the machine will something something something." They are focusing on machines . But in fact we need to focus on humans , on how humans care about doing programming or operating the application of the machines. We are the masters. They are the slaves. Yukihiro Matsumoto

Basic Features ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

To Ruby From Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://www.ruby-lang.org/en/documentation/ruby-from-other-languages/to-ruby-from-java/

To Ruby From PHP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://www.ruby-lang.org/en/documentation/ruby-from-other-languages/to-ruby-from-php/

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TIOBE Programming Community Index

TIOBE Programming Community Index In the recent past it was necessary to have a large company behind the language to get it in the spotlight (Sun with Java, Microsoft with C#), but nowadays a killer app appears to be sufficient. Viral marketing via the Internet works! The winners of the last 2 years, PHP and Java, are the losers of this year.

Conditions ,[object Object],[object Object],if condition # ... elsif condition2 # ... else # ... end b = a if condition unless condition # ... else # ... end b = a unless condition if (condition) { # ... } else if (condition2) { # ... } else { # ... }

Loops ,[object Object],[object Object],while i < 5 # ... end until i == 5 # ... end apples.each { | apple | ... } shapes.each do | shape | puts shape.polygon? puts shape.sides? end while (condition) { # ... } for (int i; i < array.length; i++) { # ... }

Exception Handling ,[object Object],[object Object],try { # ... } catch (Exception e) { # ... } finally { # ... } begin # ... rescue RuntimeException => e # ... rescue e # ... ensure # ... end

[object Object],[object Object],[object Object],[object Object]

Optional Syntax Full of Expression

Expression ,[object Object],[object Object],[object Object],array.uniq.sort “ Ruby IS THE BOMB”.downcase! “ Regular expressions are fun”.gsub(/fun/, 'sweet') “ Wasting space “.strip!

Simpler AND Nicer looking code

[object Object],1.upto(100) { |i| puts i } 3.14159265.ciel 2.71828182845905.floor

What is Meta Programming? Metaprogramming is the writing of computer programs that write or manipulate other programs (or themselves) as their data or that do part of the work during compile time that is otherwise done at run time. In many cases, this allows programmers to get more done in the same amount of time as they would take to write all the code manually. Taken from http://en.wikipedia.org/wiki/Metaprogramming

Magic! ,[object Object],[object Object],class String def sanitize self .gsub( / [^a-z1-9]+ /i , ' _ ' ) end end puts " Ruby gives you alot of $$$ yo! " .sanitize # Ruby_gives_you_alot_of_yo_

[object Object],class Array def shuffle size.downto( 1 ) { | n | push delete_at(rand(n)) } self end end %w[ a b c d e f g ] .shuffle # ["c", "e", "f", "g", "b", "d", "a"]

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But, mainly because it's a lot more FUN

Who uses Ruby? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Ruby on Rails ,[object Object],[object Object]

Hottest thing to hit Web Development ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Buzz Words Buzz Words Buzz Words

Popular Sites ,[object Object],[object Object],[object Object],[object Object]

Several Limitations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

IRB – Interactive Ruby ,[object Object],[object Object],[object Object],[object Object],$ irb >> puts “Hello World” Hello World => nil >>

RI – Ruby Information ,[object Object],[object Object],$ ri String#chop! Returns a new String with the last character removed. If the string ends with , both characters are removed. Applying chop ...

Informational ,[object Object],[object Object],[object Object],[object Object],[object Object]

Learning ,[object Object],[object Object],[object Object],[object Object]

MyOSS Meetup ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Ruby

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