Incorrect behavior of str2num?

Hi,

This seems not to work as intended:

>> str2num('"Y"')

ans = 

    "Y"

This should return an empty array.

[dpb]

Can't reproduce that here w/ R2019b. Which release?

Tried clear str2num yet first?

[Arjan Lampe]

R2018b

No, I didn't name a variable str2num

[goerk]

I can reproduce the behaviour with R2017b.

[Image Analyst]

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]

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.

Answer 1

[Fangjun Jiang]

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 =
     []