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# Elisp memoization functions
See the header in the source file for details. It's very easy to use:
```cl
(require 'memoize)
(memoize 'my-function)
```
The macro `defmemoize` is also provided to directly create memoized
functions:
```cl
(defmemoize my-expensive-function (x)
(if (zerop n)
1
(* n (my-expensive-function (1- n)))))
```
Some functions are run over buffer contents, and need to be cached
only so long as the buffer contents do not change. For these
use-cases, we have the function `memoize-by-buffer-contents` as well
as the `defmemoize-by-buffer-contents` macro.
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