FerPerales

print 'Enter your name: ' #Fer
name = gets()
puts "Hello #{name}" #prints "Hello Fer"
puts 'Hello #{name}' #prints "Hello {name}"

FerPerales

puts %Q/This is the same as a double-quoted string./
puts %Q/This is also the same as a double-quoted string./
puts %q/And this is the same as a single-quoted string/
puts %Q*This is the same as a double-quoted string*
puts %Q!This is also the same as a double-quoted string!
puts %q(And this is the same as a single-quoted string)
puts %Q?This is the same as a double-quoted string?
puts %Q/This is also the same as a double-quoted string./
puts %q/And this is the same as a single-quoted string/
puts %Q#This is the same as a double-quoted string#

FerPerales

class RubyMeeting
    attr_accessor :name, :number, :date
    
    def initialize( aName, aNumber, aDate = Time.now )
        @name    = aName
        @number = aNumber
        @date = aDate
    end
    
    def attendance

FerPerales

puts(`ls`)
puts(%x/clear/)
puts(%x{su -})

FerPerales

s = "Hello " << "rubyCUCEI"
puts s # Hello rubyCUCEI
s = "Hello " + "rubyCUCEI"
puts s # Hello rubyCUCEI
s = "Hello "  "rubyCUCEI"
puts s # Hello rubyCUCEI

FerPerales

#s = "Hello " + 64 #Error: can't convert Fixnum into String
s = "Hello " << 64 
puts s # Hello @
s = "Hello " << 64.to_s
puts s # Hello 64

FerPerales

s = "Hello " 
s = s + "rubyCUCEI!" #New object "Hello rubyCUCEI!"
puts s
s = s.capitalize #New object "Hello rubycucei!"
puts s
r = "Hello "
r += "rubyCUCEI!" #New object "Hello rubyCUCEI!"
puts r
r.capitalize! #Same object "Hello rubycucei"
puts r

FerPerales

s = "OMG!"
puts s[2] 
#Ruby 1.8 displays 71; Ruby 1.9 displays G

FerPerales

s = "OMG!"
puts s[2,1] 
#Ruby 1.8 now displays G

FerPerales

s = "OMG!"
puts s[2].ord 
#Ruby 1.9 now displays 71