Class: Cell

Inherits:
Object
  • Object
show all
Defined in:
lib/spreadshit.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(raw = "", &expression) ⇒ Cell

Returns a new instance of Cell.



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# File 'lib/spreadshit.rb', line 71

def initialize(raw = "", &expression)
  @raw = raw
  @observers = Set.new
  @observed = []
  update(&expression) if block_given?
end

Instance Attribute Details

#raw ⇒ Object (readonly)

Returns the value of attribute raw.



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# File 'lib/spreadshit.rb', line 69

def raw
  @raw
end

Instance Method Details

#update(value = raw || "", &expression) ⇒ Object 



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# File 'lib/spreadshit.rb', line 86

def update(value = raw || "", &expression)
  @raw = value
  @expression = expression
  compute
  @value
end

#value ⇒ Object 



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# File 'lib/spreadshit.rb', line 78

def value
  if @@caller
    @observers << @@caller
    @@caller.observed << self
  end
  @value
end