On 2013-07-08, at 2:40 AM, Laurent PETIT <[email protected]> wrote:

> thank you all for your answer.
> 
> So to go back to my original concern, there does not seem to be a way
> to do this as I intended by just combining the existing features in
> core.
> 

I'm not sure what you're asking for here. Do you mean *in-line* with only core 
features? I suppose that's the same as asking if core already deals with this 
somehow? I don't think it does. And, for what it's worth, I see this pattern 
regularly as well, and I've used something somewhere between Thomas' and 
Y.Kohyama's techniques.

Cheers,
Bob

> Cheers,
> 
> --
> Laurent
> 
> 2013/7/8 Yoshinori Kohyama <[email protected]>:
>> Hi Laurent,
>> 
>> How about a macro like below?
>> 
>>  (defmacro tt
>>    ([x] x)
>>    ([x ts tr & more] `(tt (if (~ts ~x) (~tr ~x) ~x) ~@more)))
>> 
>> To use this,
>> 
>>  (tt x test1 transform1 test2 transform2 test3 transform3)
>> 
>> This doesn't work even number of arguments as you see.
>> 
>> HTH,
>> Y.Kohyama
>> 
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