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