Also, have another look at
'(ret (- time-now start-time))
It will yield a list containing the symbol 'ret and a nested list
containing the symbol '- etc etc etc.
I think what you expected was a vector of two numbers.
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you wrap a call to Thread/sleep in parens, in clojure this means you want
to call it, Thread/sleep returns nil and calling nil gives a
NullpointerException
Parens are not for grouping or sequencing things in clojure, and you don't
need them here - fn has an implicit do block already, in other
Hi, all
I want to do sth. like query until timeout. So I write a function below.
(defn wait-ls-ready
[]
(let [pair-fn (fn [] (
(Thread/sleep 1000)
(let [ret (try
(c/exec :ls)
