[Pkg-tcltk-devel] Bug#993388: Bug#993388: tcl8.6: nested dicts: with lappend you can duplicate and than remove intermediate values

[Davide Prina]

Hi Sergei,

On 31/08/21 18:29, Sergei Golovan wrote:

> As far as I can see, there's nothing wrong with Tcl here.

I'm very sorry for my mistakes :-(

Thanks for your explanation.

On nested dict there are very few documentation and, at first, I don't 
have fully understand the examples on the man page. So I have search and 
found a site that tell that the only way to modify a nested dict is with 
"dict with"... and I have make some mistakes...

I have try to understand dict better and found that you can modify 
nested dict also with "dict set"

I think now I have understand nested dict.

# create a nested dict
% set MyDict [dict create l0a 1 l0b1 1 l0c {l1a 2 l1b {l2a {l3a 4 l3b 4} 
l2b 3} l1c 2 l1d 2} l0d 1 l0e 1]
l0a 1 l0b1 1 l0c {l1a 2 l1b {l2a {l3a 4 l3b 4} l2b 3} l1c 2 l1d 2} l0d 1 
l0e 1

# you can add new values or update with dict set
% dict set MyDict l0c l1b l2d {l3A 4 l3B 4}
l0a 1 l0b1 1 l0c {l1a 2 l1b {l2a {l3a 4 l3b 4} l2b 3 l2d {l3A 4 l3B 4}} 
l1c 2 l1d 2} l0d 1 l0e 1

# you can append new value with dict lappend and dict with
% dict with MyDict l0c l1b {dict lappend l2d l3C 4}
l3A 4 l3B 4 l3C 4

% echo $MyDict
l0a 1 l0b1 1 l0c {l1a 2 l1b {l2a {l3a 4 l3b 4} l2b 3 l2d {l3A 4 l3B 4 
l3C 4}} l1c 2 l1d 2} l0d 1 l0e 1

You can close this bug report.

Ciao
Davide