Fwd: Re: Adding dup to Data.Tuple?

[Ivan Perez]

Forgot to CC the list.

-------- Forwarded Message --------

Hi,

One place where it pops up all the time is when you have arrows that 
create feedback loops and your output is your accumulator.

For example:

feedback acc0 (someFancyArrow >>> arr dup)

Where someFancyArrow is an arrow with two inputs (input and old 
accumulator) and one output.

Cheers

Ivan

On 28/10/18 00:08, Vanessa McHale wrote:
> Out of curiosity, do you have any examples?
>
> Cheers
>
> On 10/27/18 5:03 PM, Ivan Perez wrote:
>> Dear all,
>>
>> The function \x -> (x,x) is very convenient when working with arrows.
>>
>> Would it be appropriate to add it to Data.Tuple?
>>
>> Cheers,
>>
>> Ivan
>>
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>
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