Checks whether the provided element is there, using polymorphic compare if equal
is not provided
fold t ~init ~f
returns f (... f (f (f init e1) e2) e3 ...) en
, where e1..en
are the elements of t
Returns true
if and only if there exists an element for which the provided
function evaluates to true
. This is a short-circuiting operation.
Returns true
if and only if the provided function evaluates to true
for all
elements. This is a short-circuiting operation.
Returns the number of elements for which the provided function evaluates to true.
Returns the sum of f i
for i in the container
Returns as an option
the first element for which f
evaluates to true.
Returns the first evaluation of f
that returns Some
, and returns None
if there
is no such element.
Returns a minimum (resp maximum) element from the collection using the provided
cmp
function, or None
if the collection is empty. In case of a tie, the first
element encountered while traversing the collection is returned. The implementation
uses fold
so it has the same complexity as fold
.
of_list list
returns a queue t
with the elements of list
in the same order as
the elements of list
(i.e. the first element of t
is the first element of the
list).
filter_inplace t ~f
removes all elements of t
that don't satisfy f
. If f
raises, t
is unchanged. This is inplace in that it modifies t
; however, it uses
space linear in the final length of t
.
get t i
returns the i
'th element in t
, where the 0'th element is at the front of
t
and the length t - 1
element is at the back.