Class: RTicker::Option

Inherits:
Entry
  • Object
show all
Defined in:
lib/rticker/option.rb

Overview

Represents option contracts which are derivatives of either equities or futures.

Instance Attribute Summary collapse

Attributes inherited from Entry

#bold, #curr_value, #description, #last_changed, #purchase_count, #purchase_price, #symbol

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(symbol, description = nil, purchase_count = nil, purchase_price = nil, bold = false) ⇒ Option

Returns a new instance of Option.



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# File 'lib/rticker/option.rb', line 19

def initialize (symbol, description=nil, purchase_count=nil, purchase_price=nil, bold=false)
  super(symbol, description, purchase_count, purchase_price, bold)
  @bid = @ask = nil
end

Instance Attribute Details

#ask ⇒ Object

Because option contracts are not traded as much as their underlying, the bid/ask spread can be pretty high and there might be quite a bit of time since a trade has occurred for a given contract. Therefore it is sometimes more meaningful to represent the value of an option by showing both the current bid and ask prices rather than the last trade price.



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# File 'lib/rticker/option.rb', line 17

def ask
  @ask
end

#bid ⇒ Object

Because option contracts are not traded as much as their underlying, the bid/ask spread can be pretty high and there might be quite a bit of time since a trade has occurred for a given contract. Therefore it is sometimes more meaningful to represent the value of an option by showing both the current bid and ask prices rather than the last trade price.



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# File 'lib/rticker/option.rb', line 17

def bid
  @bid
end

Class Method Details

.update(entries) ⇒ Object 



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# File 'lib/rticker/option.rb', line 24

def Option.update (entries)
  go = Proc.new do |entry|
    Thread.new { Option.run_update entry }
  end

  threads = []
  for entry in entries
    # Can only grab one option contract at a time, so request each one in
    # a separate thread.
    threads << go.call(entry)
  end
  threads.each {|t| t.join}
end