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tuple/slice



    cfunction

    (tuple/slice arrtup [,start=0 [,end=(length arrtup)]])

    Take a sub sequence of an array or tuple from index start inclusive
    to index end exclusive. If start or end are not provided, they
    default to 0 and the length of arrtup respectively. 'start' and 'end'
    can also be negative to indicate indexing from the end of the input.
    Note that index -1 is synonymous with index '(length arrtup)' to
    allow a full negative slice range. Returns the new tuple.

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(tuple/slice [:a :b :c :d])  # => (:a :b :c :d)

(tuple/slice [:a :b :c :d] 0)  # => (:a :b :c :d)
(tuple/slice [:a :b :c :d] 1)  # => (:b :c :d)
(tuple/slice [:a :b :c :d] 3)  # => (:d)
(tuple/slice [:a :b :c :d] 4)  # => ()
(tuple/slice [:a :b :c :d] 5)  # error: index out of range

(tuple/slice [:a :b :c :d] -1)  # => ()
(tuple/slice [:a :b :c :d] -2)  # => (:d)
(tuple/slice [:a :b :c :d] -4)  # => (:b :c :d)
(tuple/slice [:a :b :c :d] -5)  # => (:a :b :c :d)
(tuple/slice [:a :b :c :d] -6)  # error: index out of range

(tuple/slice [:a :b :c :d] 0 0)  # => ()
(tuple/slice [:a :b :c :d] 0 1)  # => (:a)
(tuple/slice [:a :b :c :d] 0 4)  # => (:a :b :c :d)

(tuple/slice [:a :b :c :d] -1 -1)  # => ()
(tuple/slice [:a :b :c :d] -2 -1)  # => (:d)
(tuple/slice [:a :b :c :d] -5 -1)  # => (:a :b :c :d)

(tuple/slice [:a :b :c :d] 1 0)  # => ()
(tuple/slice [:a :b :c :d] 4 0)  # => ()
(tuple/slice [:a :b :c :d] -1 -2)  # => ()
(tuple/slice [:a :b :c :d] -1 -5)  # => ()

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