class NilClass
Public Instance Methods
blank?()
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nil
is blank:
nil.blank? # => true
@return [true]
# File lib/wedge/utilis/blank.rb, line 56 def blank? true end
duplicable?()
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nil
is not duplicable:
nil.duplicable? # => false nil.dup # => TypeError: can't dup NilClass
# File lib/wedge/utilis/duplicable.rb, line 43 def duplicable? false end
try(*args)
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Calling try
on nil
always returns nil
. It becomes especially helpful when navigating through associations that may return nil
.
nil.try(:name) # => nil
Without try
@person && @person.children.any? && @person.children.first.name
With try
@person.try(:children).try(:first).try(:name)
# File lib/wedge/utilis/try.rb, line 96 def try(*args) nil end
try!(*args)
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Calling try!
on nil
always returns nil
.
nil.try!(:name) # => nil
# File lib/wedge/utilis/try.rb, line 103 def try!(*args) nil end