2015-02-15 10:23 GMT+01:00 Atamert Ölçgen <[email protected]>:
>
>
> On Sat, Feb 14, 2015 at 6:08 PM, Cecil Westerhof <[email protected]>
> wrote:
>
>> 2015-02-14 12:33 GMT+01:00 Cecil Westerhof <[email protected]>:
>>
>>>
>>> 2015-02-11 8:32 GMT+01:00 Cecil Westerhof <[email protected]>:
>>>
>>>>
>>>> I needed a function to get the percentage as an int. Input is place and
>>>> total-count.
>>>> I want the normal definition (which is the default) and a high and low
>>>> variant.
>>>>
>>>> I came up with the following code:
>>>> (defn get-percentage
>>>> ([place total-count] (get-percentage :normal place total-count))
>>>> ([mode place total-count]
>>>> (let [percentage
>>>>
>>>> (/ (* place 100.0) total-count)]
>>>> (condp = mode
>>>> :high (int (Math/ceil percentage))
>>>> :low (int (Math/floor percentage))
>>>> :normal (int (Math/round percentage))
>>>>
>>>
> I don't understand why you prefer this over Phill's suggestion (using comp
> and having 3 versions of get-percentage). Then you wouldn't need the extra
> arity (2 param one) too.
>
> Phill's version is 7 lines of code, 4 simple defn's & 3 def's. I'm just
> saying this in case it was overlooked.
>
One reason is that now I can use a parameter to decide which version to
call. If there is a part of code where the version of get-percentage is
depending on a parameter, I just can use:
(get-percentage mode place total-count)
Instead of having to use a condition block at that place.
--
Cecil Westerhof
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