Comments on: Implementing a Value Object http://davybrion.com/blog/2007/07/implementing-a-value-object/ Trying to walk that thin line between intelligence and ignorance Thu, 09 Sep 2010 13:37:05 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: The Inquisitive Coder - Davy Brion’s Blog » Blog Archive » Implementing A Value Object With NHibernate http://davybrion.com/blog/2007/07/implementing-a-value-object/comment-page-1/#comment-10531 The Inquisitive Coder - Davy Brion’s Blog » Blog Archive » Implementing A Value Object With NHibernate Wed, 25 Mar 2009 22:12:12 +0000 http://ralinx.wordpress.com/2007/07/08/implementing-a-value-object/#comment-10531 [...] covered implementing a Value Object before, but this post is about using Value Objects with NHibernate. First, a little recap of what a [...] [...] covered implementing a Value Object before, but this post is about using Value Objects with NHibernate. First, a little recap of what a [...]

]]> By: NHibernate composite-element mapping http://davybrion.com/blog/2007/07/implementing-a-value-object/comment-page-1/#comment-39 NHibernate composite-element mapping Fri, 15 Feb 2008 22:26:14 +0000 http://ralinx.wordpress.com/2007/07/08/implementing-a-value-object/#comment-39 [...] properly implementing Equals() and GetHashCode() with cascade="all" the persistence (and deletion) [...] [...] properly implementing Equals() and GetHashCode() with cascade="all" the persistence (and deletion) [...]

]]> By: Idetrorce http://davybrion.com/blog/2007/07/implementing-a-value-object/comment-page-1/#comment-40 Idetrorce Sat, 15 Dec 2007 14:09:28 +0000 http://ralinx.wordpress.com/2007/07/08/implementing-a-value-object/#comment-40 very interesting, but I don't agree with you Idetrorce very interesting, but I don’t agree with you
Idetrorce

]]> By: Davy Brion http://davybrion.com/blog/2007/07/implementing-a-value-object/comment-page-1/#comment-38 Davy Brion Sat, 18 Aug 2007 09:50:52 +0000 http://ralinx.wordpress.com/2007/07/08/implementing-a-value-object/#comment-38 Thx for the tip and excellent post btw :) Thx for the tip and excellent post btw :)

]]> By: Marc Brooks http://davybrion.com/blog/2007/07/implementing-a-value-object/comment-page-1/#comment-37 Marc Brooks Fri, 17 Aug 2007 22:23:32 +0000 http://ralinx.wordpress.com/2007/07/08/implementing-a-value-object/#comment-37 Your implementation of GetHashCode is sub-optimal because it simply does an XOR of the component hash-codes. In many reflectored Microsoft assemblies, I've discovered a repeatable practice of doing a shift AND XOR to combine hash-codes. My typical game is a left-shift of 5 bits, so: return (_street.GetHashCode() << 5) ^ _city.GetHashCode(); Of course with many different elements that can get a little ugly so a helper method is in order. See my blog for that. http://musingmarc.blogspot.com/2007/08/vtos-rtos-and-gethashcode-oh-my.html Your implementation of GetHashCode is sub-optimal because it simply does an XOR of the component hash-codes. In many reflectored Microsoft assemblies, I’ve discovered a repeatable practice of doing a shift AND XOR to combine hash-codes. My typical game is a left-shift of 5 bits, so:

return (_street.GetHashCode() << 5) ^ _city.GetHashCode();

Of course with many different elements that can get a little ugly so a helper method is in order. See my blog for that.

http://musingmarc.blogspot.com/2007/08/vtos-rtos-and-gethashcode-oh-my.html

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