Incorrect behavior of str2num?

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Arjan Lampe
Arjan Lampe on 13 May 2020
Commented: Arjan Lampe on 13 May 2020
Hi,
This seems not to work as intended:
>> str2num('"Y"')
ans =
"Y"
This should return an empty array.
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Image Analyst
Image Analyst on 13 May 2020
Edited: Image Analyst on 13 May 2020
In r2020a:
>> str2num('"Y"')
ans =
[]
as expected, since it's not a number. So the best answer is to upgrade. Can you do that? Are you on the maintenance plan?
Arjan Lampe
Arjan Lampe on 13 May 2020
Well, my company is, but I've just merged to R2018b a month ago or so. So upgrading is not going to happen soon... Anyway, I'll work my way around it then.

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Accepted Answer

Fangjun Jiang
Fangjun Jiang on 13 May 2020
Seems that way.
>> version
ans =
'9.5.0.1298439 (R2018b) Update 7'
>> str2num('"Y"')
ans =
"Y"
>> version
ans =
'9.7.0.1319299 (R2019b) Update 5'
>> str2num('"Y"')
ans =
[]

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