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-;;; vector.el --- Working with Elisp's Vector data type -*- lexical-binding: t -*-
-
-;; Author: William Carroll <wpcarro@gmail.com>
-;; Version: 0.0.1
-;; Package-Requires: ((emacs "25.1"))
-
-;;; Commentary:
-;; It might be best to think of Elisp vectors as tuples in languages like
-;; Haskell or Erlang.
-;;
-;; Not surprisingly, this API is modelled after Elixir's Tuple API.
-;;
-;; Some Elisp trivia:
-;; - "Array": Usually means vector or string.
-;; - "Sequence": Usually means list or "array" (see above).
-;;
-;; It might be a good idea to think of Array and Sequence as typeclasses in
-;; Elisp.  This is perhaps more similar to Elixir's notion of the Enum protocol.
-;;
-;; Intentionally not supporting a to-list function, because tuples can contain
-;; heterogenous types whereas lists should contain homogenous types.
-
-;;; Code:
-
-;; TODO: Consider supporting an alias named tuple for vector.
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Library
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
-(defconst vector-enable-tests? t
-  "When t, run the tests defined herein.")
-
-;; TODO: Consider labelling variadic functions like `vector-concat*'
-;; vs. `vector-concat'.
-(defun vector-concat (&rest args)
-  "Return a new vector composed of all vectors in `ARGS'."
-  (apply #'vconcat args))
-
-;; TODO: Here's a sketch of a protocol macro being consumed.
-;; (definstance monoid vector
-;;   :empty (lambda () []))
-
-(defun vector-prepend (x xs)
-  "Add `X' to the beginning of `XS'."
-  (vector-concat `[,x] xs))
-
-(defun vector-append (x xs)
-  "Add `X' to the end of `XS'."
-  (vector-concat xs `[,x]))
-
-(defun vector-get (i xs)
-  "Return the value in `XS' at index, `I'."
-  (aref xs i))
-
-(defun vector-set (i v xs)
-  "Set index `I' to value `V' in `XS'.
-Returns a copy of `XS' with the updates."
-  (let ((copy (vconcat [] xs)))
-    (aset copy i v)
-    copy))
-
-(defun vector-set! (i v xs)
-  "Set index `I' to value `V' in `XS'.
-This function mutates XS."
-  (aset xs i v))
-
-(when vector-enable-tests?
-  (let ((xs [1 2 3])
-        (ys [1 2 3]))
-    (prelude-assert (= 1 (vector-get 0 ys)))
-    (vector-set 0 4 ys)
-    (prelude-assert (= 1 (vector-get 0 ys)))
-    (prelude-assert (= 1 (vector-get 0 xs)))
-    (vector-set! 0 4 xs)
-    (prelude-assert (= 4 (vector-get 0 xs)))))
-
-;; TODO: Decide between "remove" and "delete" as the appropriate verbs.
-;; TODO: Implement this.
-;; (defun vector/delete (i xs)
-;;   "Remove the element at `I' in `XS'.")
-
-(provide 'vector)
-;;; vector.el ends here