Thanks for your very very helpful help.
Another question is:
defmacro defmodel [model-name]
`(let [sym-model-name ~(symbol (str "app.model." model-name))]
(do
On 8月4日, 下午3时42分, Meikel Brandmeyer <m...@kotka.de> wrote:
> Hi,
>
> On Aug 4, 9:32 am, limux <liumengji...@gmail.com> wrote:
>
> > i very confused var-quote, hope someone explain it more detailed than
> > the clojure.org's, thks.
>
> Global values are stored in so-called Vars. Symbols are used in
> program code to link to those Vars, ie. to basically give them a name.
> So the addition function is stored in a Var named +. So whenever the
> compiler sees the symbol + it looks up the Var + refers to and gets
> its value, the actual addition function. Now, if you actually want to
> access the Var itself, not the function it holds, you need to somehow
> tell the compiler this intent. And this is exactly what #' does. When
> you write #'+ in your code, you tell the compiler: "Look. I want the
> Var named +, not its contents."
>
> This is useful to extract metadata about the value in the function,
> like docstrings, argument lists, type hints, etc.
>
> Hope this helps.
>
> Sincerely
> Meikel
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