Hello Christoph,
Le 01/12/2016 18:25, christophk a écrit :
Hi there,
is there a way to use a string variable during a children-call in a scilab
structure?
Here is an example for what i want to do:
function myvalue = getchild(myparent,mychild)
//this function doesn't work and is just meant to show the idea of what
I want to do:
//"mychild" is a string to call for a childname of "myparent", which is a
struct. Is this at all possible?
myvalue = myparent.mychild;
endfunction
s = struct('a',[1 2 3],'b', [4 5 6]);
//how do I change my getchlidren function for this to work
x = getchild(s,'a'); // equivalent for x = s.a;
y = getchild(s,'b'); // equivalent for y = s.b;
What you name "children" is usually named a "field" of a structure or of
another tlist or mlist type.
You don't need any "getchild()" function to address / extract / feed the
field of a structure.
It is a built-in syntax. Just do
myparent(mychild)
And that's it.
Examples:
s.r = [%pi %e %i] // equivalent to s("r")
s.t = ["Hi" "Hello"]
// Now,
myField = "r";
s(myField)
// The syntax with ("..") allows using some fieldnames with spaces:
s("big cities") = ["Mexico" "Paris" "Tokyo"]
// s."big cities" does not work, but the following does:
s("big cities")
UTF-8 chararacters are forbidden in field names with Scilab 5, but
Scilab 6 accepts them:
-->getversion("scilab")
ans =
5. 5. 2. 1.428D+09
-->s.réel = %pi
!--error 2
Invalid factor.
// In another session:
--> getversion("scilab")
ans =
6. 0. 0. 1.477D+09
--> s.réel = %pi
s =
réel: [1x1 constant]
Isn't this great ?! :)
HTH
Samuel Gougeon
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