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| From: | Kai Torben Ohlhus |
| Subject: | [Octave-bug-tracker] [bug #50359] isnull false negative |
| Date: | Tue, 21 Feb 2017 06:37:50 -0500 (EST) |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36 |
Follow-up Comment #4, bug #50359 (project octave):
As far as I understand this function, it is checking for a singleton
"null_XXX" objects with unique reference (therefore non-assignable):
>> typeinfo ([])
ans = null_matrix
>> x = []
x = [](0x0)
>> typeinfo (x)
ans = matrix
>> typeinfo ("")
ans = null_string
>> typeinfo ('')
ans = null_sq_string
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