On Wed, Nov 25, 2009 at 11:01:32PM +0100, Meikel Brandmeyer wrote:
>(defmacro lazy-seq
> "..."
> [& body]
> `(LazySeq. ~(with-meta `fn* {:once true}) [] ~...@body))
It's also probably good to explain why fn* is quoted with backquote
rather than a regular quote. This took me a while to figure out, and
I've only found an explanation inside of one of Rich's talks.
A lot to learn even from the REPL, just by doing:
=> 'list
list
=> `list
clojure.core/list
As I understand it, the backquoted one will be qualified in the
namespace the macro is in and not be "bothered" by the user's
namespace having something defined under that name as well.
David
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