about summary refs log tree commit diff
path: root/configs/shared/.emacs.d/wpc/vector.el
diff options
context:
space:
mode:
Diffstat (limited to 'configs/shared/.emacs.d/wpc/vector.el')
-rw-r--r--configs/shared/.emacs.d/wpc/vector.el81
1 files changed, 0 insertions, 81 deletions
diff --git a/configs/shared/.emacs.d/wpc/vector.el b/configs/shared/.emacs.d/wpc/vector.el
deleted file mode 100644
index 6d2fe20d1209..000000000000
--- a/configs/shared/.emacs.d/wpc/vector.el
+++ /dev/null
@@ -1,81 +0,0 @@
-;;; vector.el --- Working with Elisp's Vector data type -*- lexical-binding: t -*-
-;; Author: William Carroll <wpcarro@gmail.com>
-
-;;; 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