Module: Enumerable

Defined in:
lib/enumerable_hashify/enumerable.rb

Instance Method Summary collapse

Instance Method Details

#hashify(val = true) ⇒ Object

Create a hash whose keys are the enumerable’s elements, with specified values.

If no block is given, the given parameter (default true) is used for all values, e.g.:

[1,2,3,4].hashify               --> {1=>true, 2=>true, 3=>true, 4=>true}
[1,2,3,4].hashify("a")          --> {1=>"a", 2=>"a", 3=>"a", 4=>"a"}

If a block is given, each key’s value is the result of running the block for that key, e.g.:

[1,2,3,4].hashify{|n| "a" * n}  --> {1=>"a", 2=>"aa", 3=>"aaa", 4=>"aaaa"}



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# File 'lib/enumerable_hashify/enumerable.rb', line 16

def hashify(val=true)
  h = {}
  if block_given?
    each { |item| h[item] = yield(item) }
  else
    each { |item| h[item] = val }
  end
  h
end