Hi,
I am trying to find my way around clojure and leiningen. I created a project
with lein new, and up to now, all my code is in the src/../core.clj file
I have a function that defines functions based on what is read in from a
csv-file, in the following format:
(defn define-all-properties
[]
(for [ stuff ]
...
(eval `(defn ~name [arg#]
(...))))))
I then do
(define-all-properties)
Here is my problem: I have also tried to define in the same file functions
based on those created by *define-all-properties*, like the following:
(defn obstruent? [sound]
(or (stop? sound)
(fricative? sound)))
When I load the core file for the first time, there is an error message,
because the function stop? is not yet defined. I understand - I think - why
this is so. After loading the core file for the first time, I have to
evaluate (define-all-properties), and at the next load for the file, there
is no error anymore.
While I can do that by hand with nrepl, the problem is that when I define
tests in the tests directory, "lein test" also fails with the same error
message.
I assume that making a makro out of *define-all-properties* is not the way
to go, because it depends on the reading of a file, which should not yet be
done at compile time (this may be a false assumption; in any way, simply
changing the defn to a defmacro does not seem to resolve the issue).
Is there a (recommended) way of enforcing that a certain function has
already been evaluated when another one is called?
I thought I might try to create another file containing the function-
defining function, and then load it from the core file. It would be easier
if in Leiningen, this could be specified (but I didn't find any reference to
load order).
Or is there a way of adding a hook to a function, specifying at which time
it needs to be defined?
I hope that I am being clear here...
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