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Re: Why does this not work?
From: |
David Bateman |
Subject: |
Re: Why does this not work? |
Date: |
Fri, 26 Nov 2004 17:34:05 +0100 |
User-agent: |
Mutt/1.4.1i |
According to Ananda Murthy R S <address@hidden> (on 11/26/04):
> Hello,
>
> I am unable to find why the code given below does not
> print the required result in Octave 2.1.63. I am
> running this version on Slackware 10.
>
> n=[];
> if (n==[]);
> printf("n is empty");
> endif
This went for compatiablity I believe since "n == []" is technically an
empty matrix. I believe matlab R13 and later do it this way, though I
can't confirm..... To see why it is incorrect consider
a = round(randn(2,2));
a == 0
ans =
0 0
0 0
So what to do get when the matrix is empty but another empty matrix.
You should use "isempty" instead and in that way you'll know it is
compatiable everywhere...
Cheers
David
--
David Bateman address@hidden
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