if {$el ni $list} ...Opposite of in. - rs 2007-04-26
set el Mon set list [list Mon Tue Wed Thu Fri Sat Sun] if {$el ni $list} { puts "Invalid day abbreviation" } else { puts "Valid day abbreviation" }TeXies beware! This is not a \ni (∋), but a \notin (∉).
Featured prominently in at least one movie http://www.youtube.com/watch?v=QTQfGd3G6dg
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