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Is Tcl Recursive?

Posted by admin (Graham Ellis), 27 October 2007
I'm posting this up here - a question asked on a Tcl course - is Tcl recursive?  ((Which basically means "can a proc call itself")).  The answer is yes, and here is the classic proof, using recursion to generate  a factorial number

# Is Tcl Recursive?

# Yes - if you *must*!!

proc factorial this {
       if {$this > 1} {
               return [expr $this * [factorial [expr $this -1]]]
       return 1
# Stack limit between 800 and 1000 levels
puts [factorial 10]

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