I would like to have a function which tells me about the values of a
var, where the parameter to the function is a string equal to the
'name' of the var.
For example:
(defn checkNil [name]
"If the var with the given (String) name is nil, display a
message; result = value of var".
(when (nil? (value of the var called name))
(display (str name " is nil")))
(value of the var called name))
so that
(def x nil)
(checkNil "x")
should display: "x is nil" -- (display s) being a function that shows
the string s somewhere.
The question is, how do I express (value of the var called name)?
I tried this: (var (symbol name))
but that caused the exception: clojure.lang.PersistentList cannot be
cast to clojure.lang.Symbol
Is this possible?
----------------
Another way to do it would be as follows.
(defn checkNil [x]
"If the variable x is nil, display a message; result = value of
x."
(when (nil? x)
(display (str (name of the var x) ) " is nil")))
x)
so that
(def x nil)
(checkNil x)
should display: "x is nil".
In this case - how to do: (name of the var x)?
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