Class: Zoidberg::Future

Inherits:

Object

• Object
• Zoidberg::Future

Defined in:

lib/zoidberg/future.rb

Overview

Perform action and fetch result in the future

Instance Attribute Summary

• #future ⇒ Concurrent::Future readonly

  Underlying thread running task.

Instance Method Summary

• #available? ⇒ TrueClass, FalseClass

  Check if value is available.

• #initialize { ... } ⇒ self constructor

  Create a new instance.

• #value ⇒ Object

  Result value.

Constructor Details

#initialize { ... } ⇒ self

Create a new instance

Yields:

• block to execute

# File 'lib/zoidberg/future.rb', line 14

def initialize(&block)
  @future = Concurrent::Future.execute(&block)
end

Instance Attribute Details

#future ⇒ Concurrent::Future (readonly)

Returns underlying thread running task.

Returns:

• (Concurrent::Future) —

  underlying thread running task

# File 'lib/zoidberg/future.rb', line 8

def future
  @future
end

Instance Method Details

#available? ⇒ TrueClass, FalseClass

Check if value is available

Returns:

• (TrueClass, FalseClass)

# File 'lib/zoidberg/future.rb', line 29

def available?
  future.fulfilled?
end

#value ⇒ Object

Returns result value.

Returns:

• (Object) —

  result value

# File 'lib/zoidberg/future.rb', line 19

def value
  unless(@value)
    @value = @future.value
  end
  @value
end