ni

From Tcl 8.5, list non-inclusion expr operator. E.g.

 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 RFox

Category Operator