Thursday, 4 October 2012

Ruby Training in Coimbatore | Open Source Jobs in Coimbatore and Ruby Open Source Projects in Coimbatore

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Open Source Training

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Constructing and using an array:

a = [1, 'hi', 3.14, 1, 2, [4, 5]]
puts a[2]           # 3.14
puts a.[](2)        # 3.14
puts a.reverse      # [[4, 5], 2, 1, 3.14, 'hi', 1]
puts a.flatten.uniq # [1, 'hi', 3.14, 2, 4, 5]
Constructing and using an associative array (called hashes in Ruby): 
hash = { :water => 'wet', :fire => 'hot' }
puts hash[:fire] # Prints:  hot
hash.each_pair do |key, value| # Or:  hash.each do |key, value|
  puts "#{key} is #{value}"
# Prints:  water is wet
#          fire is hot
hash.delete :water # Deletes :water => 'wet'
hash.delete_if {|key,value| value=='hot'} # Deletes :fire => 'hot'


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