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15 lines
540 B
Markdown
15 lines
540 B
Markdown
# Argument Requirements For A Function
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When defining a function, you must declare one or more function definitions,
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each of which will require a different set of arguments. These argument
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lists are stored as metadata for the function. So, if you are trying to
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figure out what arity a function is or what variations of arguments it
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takes, you can check the metadata like so:
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```
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> (:arglists (meta #'str))
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([] [x] [x & ys])
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```
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[source](http://stackoverflow.com/questions/1696693/clojure-how-to-find-out-the-arity-of-function-at-runtime)
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