How to remove duplicate element from Tcl list say:
list is like [this,that,when,what,when,how]
I have Googled and have found lsort unique but same is not working for me. I want to remove when from list.
Remove duplicate elements from list in Tcl
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4 Answers
The following works for me
set myList [list this that when what when how]
lsort -unique $myList
this returns
how that this what when
which you could store in a new list
set uniqueList [lsort -unique $myList]
You could also use an dictionary, where the keys must be unique:
set l {this that when what when how}
foreach element $l {dict set tmp $element 1}
set unique [dict keys $tmp]
puts $unique
this that when what how
That will preserve the order of the elements.
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