Tip: Rescue blocks in Ruby

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Everybody must have heard and used the exception handling in Ruby. But here is one trick that might be useful. "Rescue blocks don't need to be tied to a 'begin' "

def x
  begin
    # ...
  rescue
    # ...
  end
end


def x
  # ...
rescue
  # ...
end

You can also use rescue in its single line form to return a value when other things produces error.

data = { :age => 10 }
h[:name].downcase                         # ERROR
h[:name].downcase rescue "No name"        # => "No name"

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