Greg Hauptmann
1/8/2009 3:19:00 AM
hi
Q1. If I want to manually trigger a DB transaction roleback
progrmatically what approach/methods should I use?
Q2. Also if in the transactions I use multiple models, should I start
the transaction by (a) choosing one of the models & going
<model>.transaction do, or (b) use some other generic DB transaction
method (ie no model namc)?
REQUIREMENTS:
* upload of records from file
* want to try each one re loading into DB, then collect errors in
array for those that fail
* then at end want to:
(a) roll back everything , but also
(b) overall method should NOT raise exception (ie why I want to
trigger rollback without relying on an exception to do this
thanks
On 1/8/09, Fabio Aquotte <lists@aquotte.com> wrote:
> Hello andrea,
>
>> I was trying to code the classic tictactoe in ruby.
>> Now it only plays itself doing random moves until someone wins, and
>> there
>> are still some bugs.
>>
>> But the thing that really I don't understand is another,
>>
>> With this line every time I pick the next move:
>>
>> x, y = (0...(board.length)).to_a.choice, (0...
>> (board.length)).to_a.choice
>>
>> But I get always the same game!!:
>>
>> [snip]
>
> You should add a call to srand before the call to random_play. It
> will seed the random number generator so that you don't get the
> same sequence of random numbers every time you run your program.
>
> --
> Fabio Aquotte
>
>