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Just noting syntax change...

From: Daniel J Sebald
Subject: Just noting syntax change...
Date: Mon, 20 Dec 2004 04:59:09 -0600
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20041020

Here are a couple lines:

     seconds = str2num(rin);
     if (seconds ~= [])

that I think used to work equivalent to:

     seconds = str2num(rin);
     if (~isempty(seconds))

However, the test:

     seconds ~= []

now produces

     ans = [](0x0)

that is,

octave:21> seconds = str2num("4.55")
seconds = 4.5500
octave:22> seconds ~= []
ans = [](0x0)

I'm changing over to "isempty" under the assumption that "seconds ~= []" is no longer valid syntax.


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