[gecode-users] very odd bug in small program

[Christian Schulte]

Denys,

I also believed that this was the case: it is for variable arrays but not
for argument arrays (is that correct?).

Mikael: can you shed some light on this, please?

Christian

--
Christian Schulte, www.ict.kth.se/~cschulte/


-----Original Message-----
From: users-bounces at gecode.org [mailto:users-bounces at gecode.org] On Behalf
Of Denys Duchier
Sent: Monday, September 27, 2010 1:21 PM
To: users at gecode.org
Subject: Re: [gecode-users] very odd bug in small program

Chris Mears <chris.mears at monash.edu> writes:

> I think the problem is that the Matrix constructor copies the IntArgs
> array, so that when you modify MC you aren't changing C itself.

meh! I expected a matrix to be a view of the same underlying model, not
a copy. me not likey!

> (Whether it ought to do this or not is another question.)  One
> solution is to instead write:
>
>   IntArgs C(4*4, 7, 1, 3, 4, 8, 2, 5, 1, 4, 3, 7, 2, 3, 1, 6, 8);

ok, thank you, but... (sigh)

--Denys

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