Hi Richard,
As you probably know, Clojure java interop requires the method to be a
symbol:
user=> (. 5 toString)
"5"
So if you want to invoke a method from a string, you can convert the
string to symbol first:
user=> (symbol "toString")
toString
Great! but (. 5 (symbol "toString")) wont work because (symbol
"toString") is not evaluated. Instead it gets transformed into
5.symbol("toString") which is not what we want :( :(
However with a little trickery we can still do it (please excuse
ugliness - my macro-fu is weak):
(defmacro my-invoke [method-str instance & args]
`(. ~instance ~(symbol method-str) ~...@args))
user=> (my-invoke "toString" 5)
"5"
Regards,
Tim.
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