Module: Kernel

Defined in:

lib/future.rb,
lib/promise.rb

Instance Method Summary

• #future { ... } ⇒ Future

  Creates a new future.

• #promise { ... } ⇒ Promise

  Creates a new promise.

Instance Method Details

#future { ... } ⇒ Future

Creates a new future.

Examples:

Evaluate an operation in another thread

x = future { 3 + 3 }

Yields:

• A block to be optimistically evaluated in another thread.

Yield Returns:

• (Object) —

  The return value of the block will be the evaluated value of the future.

Returns:

• (Future)

# File 'lib/future.rb', line 62

def future(&block)
  Future.new(&block)
end

#promise { ... } ⇒ Promise

Creates a new promise.

Examples:

Lazily evaluate an arithmetic operation

x = promise { 3 + 3 }

Yields:

• A block to be lazily evaluated.

Yield Returns:

• (Object) —

  The return value of the block will be the lazily evaluated value of the promise.

Returns:

• (Promise)

# File 'lib/promise.rb', line 87

def promise(&block)
  Promise.new(&block)
end