Next rig? Work in progess…

Posted on December 29, 2008

I’m not buying anything yet since can’t really afford it. So I decided to wait until Duke Nukem Forever is released ;-)

Also, since I don’t really need retail box with cables and manuals and to save money I will buy OEM components.

Image	Product Description	Total Price
	UltraSharp 2009W 20” Widescreen LCD Monitor with Height Adjustable Stand	$239.99
	ASUS P5Q Pro LGA 775 Intel P45 ATX Intel Motherboard - Retail	$125.99
	HIS Hightech H487F512P Radeon HD 4870 512MB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - Retail	$243.99
	COOLER MASTER Real Power Pro RS-650-ACAA-A1 650W ATX Form Factor 12V V2.3 / SSI Standard EPS 12V V2.91 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Retail	$97.79
	Intel Core 2 Duo E8500 Wolfdale 3.16GHz LGA 775 65W Dual-Core Processor Model BX80570E8500 - Retail	$229.49
	Sunbeam CR-CCTF 120mm “Core Contact Freezer” CPU Cooler - Retail	$46.49
	Crucial Ballistix 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model BL2KIT25664AA80A - Retail	$51.25
	Two disk for RAID 0: SAMSUNG SpinPoint T Series HD501LJ 500GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM	$67.49 $67.49
Subtotal:		$1173

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Rich internet applications

Posted on December 13, 2008

Flex, JavaFX, GWT, Silverlight something interesting is coming soon!

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Rum, red wine, honey + tree bark

Posted on December 11, 2008

Mama Juana from Dominican Republic and is really, really good, smooth drink. Right now I’m a happy consumer ;-)

Will buy again for sure! ( or should I homebrew some using maple syrop and wood from the backyard? Hmmm)

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Type and subclassing

Posted on December 5, 2008

I was reading Snyder’s 86 paper where he describes how inheritance violates encapsulations and it helped me realized the reason for duck typing.

In most modern OO languages we define a subtype (of class A) by inheritance (B : implements A). However what if B can be implemented more efficiently by using different algorithms while at the same time preserving the same programming interface (type). But now A and B have no common ancestors and in most languages will be treated as different types. So you can’t pass B to code that expects an object of type or subtype of A. To avoid this problem Snyder recommends to separate sub-typing from inheritance. Instead sub-typing should be based in behaviour of the objects. If instances of class B meet the external interface of class A, then B should be a subtype of A.

ps I thing functional languages like haskell and skala treat type issue more seriously.

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TDD

Posted on November 26, 2008

When people develop software they are supposed to write lots of tests to guide the application design, and later use them for regression testing.

However I still don’t see why they are not using an impact analysis tool they will create a test suite with a subset of tests that will verify pieces affected by changes and no other tests. That would save so much time.

In fact I do not know of such tool myself.

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SPAM

Posted on November 25, 2008

Some time ago I wrote a rant, about people on 8th floor of Hall building, who take thier shoes off, and put their legs with thier smelly socks on the tables.

Well, by now they are probably graduated, and started a socks advertising compaign. Here is a spam reply I got:

“Thanks for such an important articles about Socks. This is a very needed info about online socks buying.”

It’s pretty good actually. Kinda like google ads. They probably used public API of a blog search engine to find that post. I think that this is just a start, with more and more sites exposing their content and capabilities via ATOM, REST and web services those spam ad campaigns will be more and more targeted and personal.

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