[reactive] Re: Changed argument orders for snapshot etc

[David Sankel]

Tutorials <http://netsuperbrain.com/blog/posts/category/reactive-tutorials/>
updated.

2008/12/8 Conal Elliott <conal at conal.net>

> also whenE (in reactive-0.10.3).
>
>
> On Mon, Dec 8, 2008 at 3:46 PM, Conal Elliott <conal at conal.net> wrote:
>
>> I swapped the argument order for snapshot and a few other functions.  For
>> instance,
>>
>>     -- old type
>>     snapshot :: Event a -> Behavior b -> Event (a,b)
>>
>>     -- new type
>>     snapshot :: Behavior b -> Event a -> Event (a,b)
>>
>> So that 'snapshot b' is an event transformer.  This change makes other
>> operations work out nicely when partially applied.
>>
>> Take careful note of the argument and result orders.  I'm not sure what's
>> most memorable.  I've kept to the convention that the additional info is in
>> the second half of the result.  Also a bit odd:
>>
>>     snapshotWith :: (a -> b -> c) -> Behavior b -> Event a -> Event c
>>
>> The complete list of argument-swappedfns: snap, snapshot, snapshot_,
>> snapRemainderE, splitE (watch out).
>>
>> Libraries affected: reactive, reactive-glut, reactive-fieldtrip.
>>
>>   - Conal
>>
>>
>
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-- 
David Sankel
Sankel Software
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