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<div class="moz-cite-prefix">Le 09/03/2016 00:48, Samuel Gougeon a
écrit :<br>
</div>
<blockquote cite="mid:56DF64D9.4030508@free.fr" type="cite">
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<div class="moz-cite-prefix">Hello,<br>
<br>
Le 19/02/2016 10:36, Pierre-Aimé Agnel a écrit :<br>
</div>
<blockquote cite="mid:56C6E232.70901@scilab-enterprises.com"
type="cite">
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<font face="Calibri">Hello,<br>
<br>
A flag has been introduced to tackle the A+[] operation<br>
</font><tt>help</tt><tt>("</tt><tt>oldEmptyBehaviour")</tt><tt><br>
</tt><tt>oldEmptyBehaviour</tt><tt>("</tt><tt>on")</tt><tt><br>
</tt><tt>1 + []</tt><tt><br>
</tt><tt><br>
</tt><tt>oldEmptyBehaviour</tt><tt>("off")</tt><tt><br>
</tt><tt>1+[]</tt><tt><br>
</tt><font face="Calibri"><br>
</font><br>
<font face="Calibri"><tt>oldEmptyBehaviour</tt><tt>("<font
face="Calibri">query</font>")</tt><tt><br>
</tt><br>
<br>
We kept the warning for both behaviours if users want to
migrate "softly".<br>
This is also done to protect the scripts.</font><br>
</blockquote>
<br>
<font face="Calibri">Up to Scilab 5.5.2, we had <br>
</font><tt>strcat([],"anything") == "" // as well as</tt><tt><br>
</tt><tt>[] + "anything" == "" </tt><tt><br>
</tt><font face="Calibri">The fact that both expressions give the
same result is correct, since they mean exactly the same
operation.<br>
</font></blockquote>
<font face="Calibri">Not exactly the same meaning strcat(strarray,</font><tt>"anything")
adds "anything" between each element of </tt><br>
<font face="Calibri">strarray strcat("foo","blabla") ->"foo" and
not "fooblabla"<br>
So it is ok that </font><tt>strcat([], "anything") returns [] as
there is no elements.<br>
Serge<br>
</tt>
<blockquote cite="mid:56DF64D9.4030508@free.fr" type="cite"><font
face="Calibri"> <br>
But with the new behavior of +[], both results become distinct:<br>
</font><tt>strcat([], "anything") // still returns "" (scilab
6.0-b1) , while</tt><tt><br>
</tt><tt>[]+"anything" // now returns []</tt><tt><br>
</tt><font face="Calibri"><br>
This is why <b>we </b><b>could prefer from strcat([]) or
strcat([], "anything") now to return [] instead of ""</b>.<br>
What's your opinion about this?<br>
</font></blockquote>
<font face="Calibri">I do not agree for the reason explained above</font>
<blockquote cite="mid:56DF64D9.4030508@free.fr" type="cite"><font
face="Calibri"> Moreover, most of string functions processing []
<b>already</b> return [] : <b>convstr([]) => [], string([])
=> [], etc</b>.<br>
<br>
If the behavior of strcat([]) is changed, this should not depend
on the </font><font face="Calibri"><tt>oldEmptyBehaviour </tt></font>flag.<br>
<br>
Best regards<br>
<br>
Alain Lamy and Samuel Gougeon<br>
<font face="Calibri"><br>
</font> <br>
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