No way to get an element free of brackets

[Albert Chan]

(02-17-2021 10:48 AM)Didier Lachieze Wrote:  Here is a simplified way to use lists to assign values to global variables, not requiring CAS ...

FYI, assignment via expr() might assign to local variable instead, if it exist.

EXPORT test()
BEGIN
local a := 123;
expr("a := 456");
return a;
end;

CAS> test()
456
CAS> a
a

Compared to Python, which can easily assign global variables.
(OTTH, this might not be a good thing ...)

>>> def test(): a = 123; globals()['a'] = 456; return a
...
>>> test()
123
>>> a
456