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Ingy döt Net 2013-04-11 01:07:29 -07:00
parent b83f433714
commit 68f8f3e56b
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Task/Stack/PostScript/stack.ps Normal file
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% empty? is already defined.
/push {exch cons}.
/pop {uncons exch pop}.
[2 3 4 5 6] 1 push
= [1 2 3 4 5 6]
[1 2 3 4 5 6] pop
=[2 3 4 5 6]
[2 3 4 5 6] empty?
=false
[] empty?
=true