Hello everyone,

I am new to this mailing-list and to clojure.

I use Stuart Halloway's 'Programming Clojure' as learning material and
reference.
While working on a rewrite of one of my old Common Lisp programs, I
ran into this strange problem:

I want to compute some probabilities concerning the Gaussian
distribution. A map contains the pre-computed values for the
Integration. For example, one map-entry is 0.05 0.51994. The map is
called normality-table. The following works:

user> (normality-table 0.05)
--> 0.51994

But when I want to wrap this lookup into a function and use an
expression a la

(normality-table (some-function-that-evaluates-to 0.05))

the return value is nil, i.e. no matching key found. I checked the
function that returns the lookup key. It works correctly.

Why does the lookup fail when the key is generated by a function? Is
there a better way to do this?

Comments and Ideas are very much appreciated!

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