bugGNU Octave - Bugs: bug #60555, Behavior of strcat in Octave is...


bug #60555: Behavior of strcat in Octave is different of the behavior in Matlab

Submitted by:  None
Submitted on:  Sat 08 May 2021 09:43:20 AM UTC  
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Matlab Compatibility
Status:  Duplicate Assigned to:  None
Originator Name:  Thomas Stein Originator Email:  -email is unavailable-
Open/Closed:  Closed Release:  6.2.0
Operating System:  Microsoft Windows

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Sat 08 May 2021 10:42:47 AM UTC, comment #1: 

Double quotes in Matlab create string objects. In Octave, they create character arrays. (See bug #50855.)

If I run your example (but with character arrays) in Matlab R2021a, I get the same result:

>> strcat('Hello, ', 'how are you?', ' ', 'Nice weather today!')

ans =

    'Hello,how are you?Nice weather today!'

So the strcat function in Octave seems to be compatible with Matlab.

Closing as a duplicate of bug #50855.

Markus M├╝tzel <mmuetzel>
Project Member
Sat 08 May 2021 09:43:20 AM UTC, original submission:  

If I use strcat() in Matlab it don't ignore whitespaces. But in Octave Whitespaces will be ignored.

If I use for example the code:

strcat("Hello, ", "how are you?", " ", "Nice weather today!")

In Matlab the result is:

"Hello how are you? Nice weather today!"

And in Octave the result is:

"Hellohow are you?Nice weather today!"

It is correctly documented, that white spaces will be removed in Octave with strcat(). But if people use Matlab and Octave and need a compatibility it is not given in that case. In my case I try to generate C++ code with Octave and Matlab and need a compatibility. In the string handling some points are not one to one compatiple between Matlab and Octave.

I think that point could be an improvement.



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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2021-05-08 mmuetzel StatusNone => Duplicate
        Open/ClosedOpen => Closed
        Dependencies- => Depends on bugs #50855

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