Re: Any disadvantages of using put/get instead of defvar?

[Helmut Eller]

On Fri, Feb 21 2014, Tassilo Horn wrote:

> Another way would be
>
>   (progn
>     (defvar bar-foo 0)
>     (defun bar ()
>       ;; do stuff with bar-foo
>       ))
>
> which has the possible benefit that bar-foo is defined as soon as the
> file is loaded instead being undefined until the first `bar' call.  And
> the wrapping in a `progn' probably reduces the chance that you move
> `bar' somewhere and forget `bar-foo'.

With lexical-binding

(let ((foo 0))
  (defun bar ()
    ...))

is also an option.  This has the advantage that it uses the shortest
names and foo is actually a lexically scoped variable that is not
accessible outside of bar.  One disadvantage is that it's not possible to
look at foo, say for debugging purposes.

Helmut