Question

I did some research but only find ugly hacks, which uses unique name for each array element and save the names into a list. Is there any way to do this right?

Answer 1

Instead of arrays, you want to use dictionaries: http://www.tcl.tk/man/tcl8.5/TclCmd/dict.htm

Dictionaries are first-class variables and can be passed around (and placed in a list) just like other variables.

% set d1 [dict create a b c d]
% set d2 [dict create e f g h i j]
% set lst [list $d1 $d2]
% set lst  ;# ==> {a b c d} {e f g h i j}