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\DOC itlist
\TYPE {itlist : ('a -> 'b -> 'b) -> 'a list -> 'b -> 'b}
\SYNOPSIS
List iteration function. Applies a binary function between adjacent elements
of a list.
\KEYWORDS
list.
\DESCRIBE
{itlist f [x1;...;xn] y} returns
{
f x1 (f x2 ... (f xn y)...)
}
\noindent It returns {y} if list is empty.
\FAILURE
Never fails.
\EXAMPLE
{
# itlist (+) [1;2;3;4;5] 0;;
val it : int = 15
# itlist (+) [1;2;3;4;5] 6;;
val it : int = 21
}
\SEEALSO
rev_itlist, end_itlist.
\ENDDOC
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