Rubylike slice for strings and lists
(slice "hello" 2 4) => "ll"
Comparable to: "hello"[2...4]
(slice "hello" 2 -1) => "ll"
Comparable to: "hello"[2...-1]
(slice "hello" '(2 2)) => "ll"
Comparable to: "hello"[2,2]
(slice "hello" 1) => "ello"
Comparable to: "hello"[2..-1]
Comparable to: "hello"[2...4]
(slice "hello" 2 -1) => "ll"
Comparable to: "hello"[2...-1]
(slice "hello" '(2 2)) => "ll"
Comparable to: "hello"[2,2]
(slice "hello" 1) => "ello"
Comparable to: "hello"[2..-1]
(def slice (str x (o y)) (if (atom x) (if ; (slice "hello" 1) => "ello" (no y) (subseq str x) ; (slice "hello" 2 -1) => "ll" (< y 0) (subseq str x (+ (len str) y)) ; (slice "hello" 2 4) => "ll" (subseq str x y)) ; (slice "hello" '(2 2)) => "ll" (subseq str (car x) (+ (car x) (cadr x)))))
