Leaky Abstractions [Permalink]
As a computer programmer, this article caught my eye. It talks about how "abstractions" are not perfect. For all you lay readers, an abstraction is something that hides details and makes it easier to use something. For example, in order to drive a car, I don't have to know about how the car works. I just need to know a few simple things like filling the gas tank and turning on the ignition.
This article is an interesting read if you get some time; it talks about abstractions and how they�re not always perfect. Specifically, it talks about how as time goes on, computer abstractions get better and allow programmers to do more and more amazing things, but it comes at a cost.
Leaky Abstractions
Posted by shawker on Tuesday, 7 October 2003
Tags: tech
Comments (1)
Tags: tech
Comments (1)
tomcat basic security [Permalink]
In the tomcat-users.xml file in the conf directory:
<?xml version='1.0' encoding='utf-8'?> <tomcat-users> <role rolename="xxx"/> ... <user username="foo_user" password="foo_password" roles="xxx,yyy"/> ... </tomcat-users>In the web.xml file of the webapp:
<security-constraint>
<web-resource-collection>
<web-resource-name>Basic Authentication</web-resource-name>
<url-pattern>*</url-pattern> <!-- you can put as many specific patterns as you wish -->
<http-method>GET</http-method>
<http-method>POST</http-method>
</web-resource-collection>
<auth-constraint>
<role-name>manager</role-name> <!-- this maps to a role in the user xml file -->
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>BASIC</auth-method>
<realm-name>Authentication Area</realm-name>
</login-config>
<security-role>
<role-name>manager</role-name> <!-- this maps to a role in the user xml file; same as above -->
</security-role>
Posted by shawker on Wednesday, 24 September 2003
Tags: tech software
Comments (0)
Tags: tech software
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Undead Cleric [Permalink]
Here is a ral partha miniature that i painted just for fun. It's not part of any army or game. I just liked it and felt like painting it. It's the first thing I've painted since we moved into our new house and i felt a need to paint something frivolous :) Hope you enjoy.
Posted by shawker on Thursday, 18 September 2003
Tags: hobby miniatures
Comments (0)
Tags: hobby miniatures
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The Rohan House [Permalink]
This miniature building is based on the Lord Of The Rings: The Two Towers movie. It is a typical Rohan house. I got the idea from a post in the Hirst Arts message boards that referenced a set of schematics on a games workshop website. I decided to try my hand at making it. This is my first building project that used something other than Hirst Arts bricks (although I did manage to use some bricks for the stairs).
Click here for the building instructions.
The completed project:
Posted by shawker on Thursday, 18 September 2003
Tags: hobby terrain
Comments (0)
Tags: hobby terrain
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An evil knight [Permalink]
This miniature is NOT a wringwraith! Well, technically it is, but I have not painted it to look like a ringwraith. It is in fact, one of the knights that will be used in the chess set I am creating for my father in law.
Posted by shawker on Thursday, 18 September 2003
Tags: hobby miniatures
Comments (0)
Tags: hobby miniatures
Comments (0)
The Cathedral Diorama [Permalink]
With
I was experimenting with using stained glass windows and water effects (even though you can't see the water because of the angle). I used those little plastic beads that you have to melt. I don't like them. It hardens too fast, leaves little air-bubbles and dries a little yellowish. Oh well. The stained glass windows did turn out good though; i used a special hobby paint that allows you to paint on a glass-like surface and it dries just like stained glass.
Another first was my use of the 1.5" flagstone floor tiles. These are an integral part of the "big" project I plan to make (more on this later).
And the final first was my use of cardboard for a base. Don't do it. It warps... As you can probably tell from the picture; everything is crooked. :(
Oh wait - there was another first. This was a painting technique. Around the sconce, you'll notice that the light from the flame is reflecting on the wall; it looks better in person. I'm still working on this technique, but it shows great promise.
I was experimenting with using stained glass windows and water effects (even though you can't see the water because of the angle). I used those little plastic beads that you have to melt. I don't like them. It hardens too fast, leaves little air-bubbles and dries a little yellowish. Oh well. The stained glass windows did turn out good though; i used a special hobby paint that allows you to paint on a glass-like surface and it dries just like stained glass.
Another first was my use of the 1.5" flagstone floor tiles. These are an integral part of the "big" project I plan to make (more on this later).
And the final first was my use of cardboard for a base. Don't do it. It warps... As you can probably tell from the picture; everything is crooked. :(
Oh wait - there was another first. This was a painting technique. Around the sconce, you'll notice that the light from the flame is reflecting on the wall; it looks better in person. I'm still working on this technique, but it shows great promise.
Posted by shawker on Thursday, 18 September 2003
Tags: hobby terrain
Comments (0)
Tags: hobby terrain
Comments (0)
nuclear reactor [Permalink]
Wow, something good came out of Spanish Fork: Local boy makes a nuclear reactor
Posted by shawker on Wednesday, 17 September 2003
Tags: science
Comments (0)
Tags: science
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SaysPool [Permalink]
Wow, i'm sitting in the third (or was it fourth?) meeting about implementing a company blog software solution.
The overall agenda is to create an enterprise level blogging 'solution' that we as a company can use. But whenever anyone starts talking about features, there is no concensus. Everyone wants different features. That's ok - features are good. But what are the core features and then what are add-on features to add later? You'd think that by the 3rd meeting that would have been decided.
And after features, let's not even talk about implementation, because no one can seem to agree on this either. Personally I think we should decide on features first.
But hey - at least we have decided on one thing: The project code-name: sayzpool. That's cool! :)
If/when we decide on anything contcrete, i'll write more.
Posted by shawker on Tuesday, 16 September 2003
Tags: tech
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Tags: tech
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The sky is falling [Permalink]
I hope the rock from outer space fetched more from hungry meteorite hunters than the damage it cost to his house:
Click here
Posted by shawker on Saturday, 24 May 2003
Tags: space
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Tags: space
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In the matrix [Permalink]
OK, since i'm on the whole matrix thing, here's a really cool article by one of the world leading cosmologists:
In the matrix. Check it out. It talks about how the focus of cosmology is starting to shift from the "WHAT" to the "WHY".
Posted by shawker on Tuesday, 20 May 2003
Tags: singularity
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Tags: singularity
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