Class: Object

Inherits:
BasicObject
Defined in:
lib/bioinform/support/deep_dup.rb,
lib/bioinform/support/third_part/active_support/core_ext/object/try.rb

Instance Method Summary collapse

Instance Method Details

#deep_dup ⇒ Object 



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# File 'lib/bioinform/support/deep_dup.rb', line 2

def deep_dup
  Marshal.load(Marshal.dump(self))
end

#try(*a, &b) ⇒ Object

Invokes the method identified by the symbol method, passing it any arguments and/or the block specified, just like the regular Ruby Object#send does.

Unlike that method however, a NoMethodError exception will not be raised and nil will be returned instead, if the receiving object is a nil object or NilClass.

If try is called without a method to call, it will yield any given block with the object.

Please also note that try is defined on Object, therefore it won’t work with subclasses of BasicObject. For example, using try with SimpleDelegator will delegate try to target instead of calling it on delegator itself.

Examples

Without try

@person && @person.name

or

@person ? @person.name : nil

With try

@person.try(:name)

try also accepts arguments and/or a block, for the method it is trying

Person.try(:find, 1)
@people.try(:collect) {|p| p.name}

Without a method argument try will yield to the block unless the receiver is nil.

@person.try { |p| "#{p.first_name} #{p.last_name}" }

– try behaves like Object#send, unless called on NilClass.



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# File 'lib/bioinform/support/third_part/active_support/core_ext/object/try.rb', line 32

def try(*a, &b)
  if a.empty? && block_given?
    yield self
  else
    __send__(*a, &b)
  end
end