Ruby 1.9: on symbols
With version 1.9 of Ruby language, symbols are treated little differently.
Now, regular expressions are more friendly with symbols:
a = [:apples, :bananas, :cherries] puts a.grep(/ba/)
The results between 1.8 and 1.9 are quite different:
# 1.8 =>  # 1.9 => bananas
Basically, in regexp symbols are “managed” like strings.
With the new construct ”&”, we can easily obtain a
Proc object from a symbol:
puts %w(some words here, and other there).map(&:upcase).join(' ') # 1.9 => SOME WORDS HERE, AND OTHER THERE
Notice also the new compact usage of
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