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############################################################################
#
# File: xrotate.icn
#
# Subject: Procedure to rotate values in list or record
#
# Author: Ralph E. Griswold
#
# Date: April 30, 1993
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# xrotate(X, i) rotates the values in X right by one position. It works
# for lists and records.
#
# This procedure is mainly interesting as a recursive version of
#
# x1 :=: x2 :=: x3 :=: ... xn
#
# since a better method for lists is
#
# push(L, pull(L))
#
############################################################################
procedure xrotate(X, i)
/i := 1
X[i] :=: xrotate(X, i + 1)
return X[i]
end
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