Re: [Scilab-users] exists yields double
Samuel,
You are right, sorry I wasn't aware of isdef().
Regards,
Federico
On 09/02/2021 08:27, Samuel Gougeon wrote:
Hello Federico,
Le 10/10/2019 à 06:33, Federico Miyara a écrit :
Dear all,
I wonder why the function "exists" yields 1 or 0 as doubles, instead
of boolean. I know there is little distinction between booleans and
{0, 1} and can be easily converted back and forth. I also know that
Scilab is not meant to be a strongly typed language. But wouldn't it
make more sense that this kind of funtion yielded a boolean result?
It challenges reason the fact that "isreal", for instance, yields a
boolean and "exists" yields a double.
Please use isdef() instead.
exists() is a pure duplicate of isdef(), except for the output type.
Converting its output into a boolean was asked 9 years ago as bug
10892 .
We should hate introducing such duplicates, that just multiply issues
and confusion with strictly no added value.
This is why its removal was proposed sortly after, as bug 11000
.
To me, there is no added value either to convert exist()'s output into
boolean, except if this function is actually removed, or at least
masked, i.e. kept only for backcompatibility reason but undocumented.
Best regards
Samuel
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Re: [Scilab-users] exists yields double
Le 09/02/2021 à 12:27, Samuel Gougeon a écrit : ../... We should hate introducing such duplicates, that just multiply issues and confusion with strictly no added value. Actually, isdef() was introduced after exist(), just about this output type: http://bugzilla.scilab.org/show_bug.cgi?id=1011#c1 IMHO, this is a good example of an insufficient discussion about arguments, when exist() was introduced. Still, simply introducing duplicates to "fix" afterward issues, without deprecating and finally and *actually* removing the former syntax, or at least without undocumenting it, should be avoided as much as possible. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] exists yields double
Hi,
I completely agree with Samuel !
S.
Le 09/02/2021 à 12:27, Samuel Gougeon a écrit :
Hello Federico,
Le 10/10/2019 à 06:33, Federico Miyara a écrit :
Dear all,
I wonder why the function "exists" yields 1 or 0 as doubles, instead
of boolean. I know there is little distinction between booleans and
{0, 1} and can be easily converted back and forth. I also know that
Scilab is not meant to be a strongly typed language. But wouldn't it
make more sense that this kind of funtion yielded a boolean result?
It challenges reason the fact that "isreal", for instance, yields a
boolean and "exists" yields a double.
Please use isdef() instead.
exists() is a pure duplicate of isdef(), except for the output type.
Converting its output into a boolean was asked 9 years ago as bug
10892
.
We should hate introducing such duplicates, that just multiply issues
and confusion with strictly no added value.
This is why its removal was proposed sortly after, as bug 11000
.
To me, there is no added value either to convert exist()'s output into
boolean, except if this function is actually removed, or at least
masked, i.e. kept only for backcompatibility reason but undocumented.
Best regards
Samuel
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Re: [Scilab-users] exists yields double
Hello Federico,
Le 10/10/2019 à 06:33, Federico Miyara a écrit :
Dear all,
I wonder why the function "exists" yields 1 or 0 as doubles, instead
of boolean. I know there is little distinction between booleans and
{0, 1} and can be easily converted back and forth. I also know that
Scilab is not meant to be a strongly typed language. But wouldn't it
make more sense that this kind of funtion yielded a boolean result?
It challenges reason the fact that "isreal", for instance, yields a
boolean and "exists" yields a double.
Please use isdef() instead.
exists() is a pure duplicate of isdef(), except for the output type.
Converting its output into a boolean was asked 9 years ago as bug 10892
.
We should hate introducing such duplicates, that just multiply issues
and confusion with strictly no added value.
This is why its removal was proposed sortly after, as bug 11000
.
To me, there is no added value either to convert exist()'s output into
boolean, except if this function is actually removed, or at least
masked, i.e. kept only for backcompatibility reason but undocumented.
Best regards
Samuel
___
users mailing list
users@lists.scilab.org
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[Scilab-users] exists yields double
Dear all,
I wonder why the function "exists" yields 1 or 0 as doubles, instead of
boolean. I know there is little distinction between booleans and {0, 1}
and can be easily converted back and forth. I also know that Scilab is
not meant to be a strongly typed language. But wouldn't it make more
sense that this kind of funtion yielded a boolean result?
It challenges reason the fact that "isreal", for instance, yields a
boolean and "exists" yields a double.
Regards,
Federico Miyara
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