class NilClass
Public Instance Methods
blank?()
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# File lib/facets/kernel/blank.rb, line 44 def blank? true end
clone?()
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# File lib/facets/object/dup.rb, line 34 def clone? ; false ; end
dup!()
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dup?()
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# File lib/facets/object/dup.rb, line 33 def dup? ; false ; end
ergo()
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Compliments Kernel#ergo.
"a".ergo{ |o| o.upcase } #=> "A" nil.ergo{ |o| o.bar } #=> nil
CREDIT: Daniel DeLorme
# File lib/facets/kernel/ergo.rb, line 37 def ergo @_ergo ||= Functor.new{ nil } @_ergo unless block_given? end
to_bool()
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# File lib/facets/boolean.rb, line 51 def to_bool false end
to_f()
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Allows nil
to respond to to_f. Always returns 0
.
nil.to_f #=> 0.0
CREDIT: Matz
# File lib/facets/nilclass/to_f.rb, line 12 def to_f; 0.0; end
to_h()
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Allows nil
to create an empty hash, similar to to_a and to_s.
nil.to_h #=> {}
CREDIT: Trans
# File lib/facets/to_hash.rb, line 268 def to_h; {}; end
try(method=nil, *args)
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See Kernel#try.
# File lib/facets/kernel/try.rb, line 49 def try(method=nil, *args) if method nil else Functor.new{ nil } end end