Re: The best way to copy a list?

Mark Summerfield <m.n.summerfield@gmail.com> posted:

 
I'm coming to Tcl from Python & Go. In Python saying `a = [1, 2, 3]` and
then `b = a` makes `b` a _reference_ to `a` rather than an independent
variable. Now I realise that Tcl doesn't do it that way and that `set a
$b` works fine.

When I had to do some Python for work, after being familiar with Tcl,
I was quite shocked to find that Python shares values in that way! 😲

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Colin Macleod ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ https://cmacleod.me.uk

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