A short light talk about Ruby for Perl developers. It should be read "as-is" and taken lightly for .

1. Ruby For Perl Developers

2. What Is Ruby ? A dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write.

3. Ah, yes, but what is Ruby, and how it is different then Perl ?

4. puts 'bla' print “bla”

5. puts 'bla' 1.class print “bla” $a=1; print ref a;

6. puts 'bla' 1.class nil.class = NilClass print “bla” $a=1; print ref a; undef=undef

7. puts 'bla' 1.class nil.class = NilClass (0..999).each do { |i| … } print “bla” $a=1; print ref a; undef=undef for (my $i =0; i<=999; i++) ...

8. $global = ... local = ... @instance_var = ... @@class_var = ... CONSTANT = ... ; Constant = ... our $global = ... local $local = ; my $local2 = ; - - -

9. Hash <= v1.8 a = { '22' => 'twenty two' } Hash ... a = { '22' => 'twenty two' }

10. Hash <= v1.8 a = { '22' => 'twenty two' } Hash >= 1.9 (v2.0 development) a = { '22' : 'twenty two' } Hash ... a = { '22' => 'twenty two' }

11. a = case b when /^+$/ : 'digits' when /^+$/ 'letters' when /^[a-f]+$/, /^[A-F]+$/ 'hexa' when '1' : 'one' else b.class end use Switch; switch ($b) { case /^+$/ { $a = 'digits'; } case /^+$/ { $a = 'letters';} case /^[a-f]+$/ { next; } case /^[A-F]+$/ { $a='hexa';} case ('1') { $a = 'one' } else { $a = ref b; } }

12. Is that all ? Oh, no, we didn't even scratch the surface of Ruby.

13. Questions