Clojure: returning a vector from an anonymous function

Question

I wrote a small anonymous function to be used with a map call. The function returns a vector containing a column name and column value from a SQL result set que

Answer 1

You need to use vector function to do this:

#(vector (keyword %) (.getObject resultset %))

P.S. there are also functions for maps, sets, etc.

Answer 2

Your problem is that the simple syntax is trying to evaluate the vector as a function call.

You can insert an "identity" function to make it work, as this is just a simple function that will return the vector unchanged:

#(identity [(keyword %) (.getObject resultset %)])

Answer 3

Yeah, Clojure should really support a #[...] construct, just for this case.

I would recommend the following as the best alternative:

#(vector (keyword %) (.getObject resultset %))