String#to_proc

string_to_proc.rb

###  Jonathan Lancar - https://github.com/jonaphin ###

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## String#to_proc Implementation ##
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class String
  # Evaluates a string as ruby code
  def to_proc
    proc { |arg| eval "#{arg}#{self}" }
  end
end

p [1,2,3].map &' + 2 - 5'
# => [-2, -1, 0]
p (1..10).collect &" * 2"
# => [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]

## Reasoning ##
# A String as a proc, in my opinion, should try to evaluate itself
# It makes it easy and concise to evaluate ruby expressions consecutively
# The use case is fairly intuitive to developers, and seems like a "common use" scenario. 
# Warning: The implementation above does not evaluate to the binding in which the string was written