IronRuby System.DateTime NilClass
Posted
by Sergey Mirvoda
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Published on 2010-02-11T09:21:54Z
Indexed on
2010/04/07
21:13 UTC
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Why comparing to null is so unstable?
Just code.
IronRuby 0.9.4.0 on .NET 2.0.50727.4927
Copyright (c) Microsoft Corporation. All rights reserved.
>>> require 'System'
=> true
>>> i = System::Int32.MinValue
=> -2147483648
>>> i==nil
=> false
>>> d = System::DateTime.Now
=> 11.02.2010 14:15:02
>>> d==nil
(ir):1: can't convert NilClass into System::DateTime (TypeError)
>>>
In 9.1 this code works as expected.
EDIT:
workaround:
>>> i.nil?
=> false
>>> d.nil?
=> false
>>> nil
=> nil
>>> nil.nil?
=> true
>>>
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