On Monday, May 21, 2012 6:54:28 PM UTC+3, Christian Guimaraes wrote:
>
> Hi all,
>
> I'm struggling with "when" code structures and my imperative mindset.
>
> What is the better approach (or functional approach) to work with a code
> like the below?
>
> (defn parse-group [group-identifier line]
> (when (= group-identifier "ID1")
> (handle-id1 line))
> (when (= group-identifier "ID2")
> (handle-id2 line))
> (when (= group-identifier "ID3")
> (handle-id3 line)))
>
> Thank you.
> -- christian
>
>
>
Hi
Maybe something like
(defn parse-group [group-identifier line]
(condp = group-identifier
"ID1" (handle-id1 line)
"ID2" (handle-id2 line)
"ID3" (handle-id3 line)))
or, if you want to leverage the fact that maps are functions:
(defn parse-group [group-identifier line]
(({"ID1" handle-id1
"ID2" handle-id2
"ID3" handle-id3} group-identifier) line))
but then you lose some readability IMO.
On Monday, May 21, 2012 6:54:28 PM UTC+3, Christian Guimaraes wrote:
>
> Hi all,
>
> I'm struggling with "when" code structures and my imperative mindset.
>
> What is the better approach (or functional approach) to work with a code
> like the below?
>
> (defn parse-group [group-identifier line]
> (when (= group-identifier "ID1")
> (handle-id1 line))
> (when (= group-identifier "ID2")
> (handle-id2 line))
> (when (= group-identifier "ID3")
> (handle-id3 line)))
>
> Thank you.
> -- christian
>
>
>
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