Hi Tony,
On Sun, May 24, 2020 at 5:44 PM Tony Mechelynck <
antoine.mechely...@gmail.com> wrote:
> On Mon, May 25, 2020 at 2:15 AM Yegappan Lakshmanan <yegapp...@gmail.com>
> wrote:
> >
> > Hi,
> >
> > To clear the contents of a list named "abc", we can use "unlet abc[:]".
> > It looks like a similar method for clearing the contents of a dictionary
> > is not available. We can set the dictionary variable to another empty
> > dictionary (but it is not the same). Am I missing something?
> >
> > Thanks,
> > Yegappan
>
> You mean, after :let xyz = {} the old keys and values still exist? I
> wouldn't have expected that.
>
>
Consider the following function for clearing a List:
func ClearList(l)
unlet a:l[:]
endfunc
let l = [1, 2, 3, 4]
call ClearList(l)
echo "List = ->" .. string(l) .. "<-"
After calling the ClearList() function, all the elements in the List
are cleared.
A similar function for clearing a Dict:
func ClearDict(d)
for k in keys(a:d)
unlet a:d[k]
endfor
endfunc
let d = {'a' : 10, 'b' : 20}
call ClearDict(d)
echo "Dict = ->" .. string(d) .. "<-"
In this function, we have to iterate through all the keys and unlet each
item. The Dict cannot be cleared by simply using unlet or by assigning
the argument to an empty dictionary.
Regards,
Yegappan
Oh, and what about
> for k in keys(xyz) | exe 'unlet xyz.' .. k | endfor
> ?
>
>
>
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