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Diffstat (limited to 'users/wpcarro/emacs/pkgs/symbol/symbol.el')
-rw-r--r-- | users/wpcarro/emacs/pkgs/symbol/symbol.el | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/users/wpcarro/emacs/pkgs/symbol/symbol.el b/users/wpcarro/emacs/pkgs/symbol/symbol.el new file mode 100644 index 000000000000..4b16351831c9 --- /dev/null +++ b/users/wpcarro/emacs/pkgs/symbol/symbol.el @@ -0,0 +1,38 @@ +;;; symbol.el --- Library for working with symbols -*- lexical-binding: t -*- + +;; Author: William Carroll <wpcarro@gmail.com> +;; Version: 0.0.1 +;; Package-Requires: ((emacs "24")) + +;;; Commentary: +;; Library for working with symbols. + +;;; Code: + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; Library +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(defun symbol-to-string (symbol) + "Map `SYMBOL' into a string." + (symbol-name symbol)) + +(defun symbol-from-string (string) + "Map `STRING' into a symbol." + (intern string)) + +(defun symbol-as-string (f x) + "Treat the symbol, X, as a string while applying F to it. +Coerce back to a symbol on the way out." + (symbol-from-string (funcall f (symbol-to-string x)))) + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; Predicates +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(defun symbol-instance? (x) + "Return t if X is a symbol." + (symbolp x)) + +(provide 'symbol) +;;; symbol.el ends here |