c7254e7bdc
+ enable lexical-scope everywhere (lexical-binding = t): ~5-10% faster startup; ~5-20% general boost + reduce consing, function calls & garbage collection by preferring cl-loop & dolist over lambda closures (for mapc[ar], add-hook, and various cl-lib filter/map/reduce functions) -- where possible + prefer functions with dedicated opcodes, like assq (see byte-defop's in bytecomp.el for more) + prefer pcase & cond (faster) over cl-case + general refactor for code readability + ensure naming & style conventions are adhered to + appease byte-compiler by marking unused variables with underscore + defer minor mode activation to after-init, emacs-startup or window-setup hooks; a customization opportunity for users + ensures custom functionality won't interfere with startup.
32 lines
1.1 KiB
EmacsLisp
32 lines
1.1 KiB
EmacsLisp
;;; core/autoload/memoize.el -*- lexical-binding: t; -*-
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;;;###autoload
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(defvar doom-memoized-table (make-hash-table :test 'equal :size 10)
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"A lookup table containing memoized functions. The keys are argument lists,
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and the value is the function's return value.")
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;;;###autoload
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(defun doom-memoize (name)
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"Memoizes an existing function. NAME is a symbol."
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(let ((func (symbol-function name)))
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(put name 'function-documentation
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(concat (documentation func) " (memoized)"))
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(fset name
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`(lambda (&rest args)
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(let ((key (cons ',name args)))
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(or (gethash key doom-memoized-table)
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(puthash key (apply ',func args)
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doom-memoized-table)))))))
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;;;###autoload
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(defmacro def-memoized! (name arglist &rest body)
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"Create a memoize'd function. NAME, ARGLIST, DOCSTRING and BODY
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have the same meaning as in `defun'."
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(declare (indent defun) (doc-string 3))
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`(,(if (bound-and-true-p byte-compile-current-file)
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'with-no-warnings
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'progn)
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(defun ,name ,arglist ,@body)
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(doom-memoize ',name)))
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