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Task/Array-concatenation/EchoLisp/array-concatenation.echolisp

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+;;;; VECTORS
+(vector-append (make-vector 6 42) (make-vector 4 666))
+    → #( 42 42 42 42 42 42 666 666 666 666)
+
+;;;; LISTS
+(append (iota 5) (iota 6))
+   → (0 1 2 3 4 0 1 2 3 4 5)
+
+;; NB - append may also be used with sequences (lazy lists)
+(lib 'sequences)
+   (take (append [1 .. 7] [7 6 .. 0]) #:all)
+   → (1 2 3 4 5 6 7 6 5 4 3 2 1)