Class: Future

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

Overview

A delayed-execution result, optimistcally evaluated in a new Thread.

Examples:

x = future { sleep 5; 1 + 2 }
# do stuff...
y = x * 2     # => 6.  blocks unless 5 seconds has passed.

Instance Method Summary collapse

Constructor Details

#initialize(block) ⇒ Future

Parameters:

  • block (Proc) 


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# File 'lib/future.rb', line 17

def initialize(block)
  @promise = promise &block
  @thread = ::Thread.new do
    @promise.force
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/future.rb', line 33

def method_missing(method, *args, &block)
  @promise.send(method, *args, &block) 
end

Instance Method Details

#force ⇒ Any

The value of the future’s evaluation. Blocks until result available.

Returns:

  • (Any) 


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# File 'lib/future.rb', line 27

def force
  @thread.join
  @promise
end