class NilClass
Public Instance Methods
try(*args)
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Calling try
on nil
always returns nil
. It becomes specially helpful when navigating through associations that may return nil
.
nil.try(:name) # => nil
Without try
@person && !@person.children.blank? && @person.children.first.name
With try
@person.try(:children).try(:first).try(:name)
# File lib/try.rb, line 71 def try(*args) nil end
try!(*args)
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# File lib/try.rb, line 75 def try!(*args) nil end