• Why logic puzzles make good interview questions
• Logic puzzles in interviews seem to be one of those things that everyone either loves or hates, but speaking as an interviewer I find logic questions critically important in deciding between candidates
• To begin with I feel I should draw a separating line between logic puzzles and brain teasers. Logic puzzles are of the type where there’s no “trick” but rather puzzles which have answers that can be logically deduced.
• Brain teasers
• can provide some insight into the candidate I think their value is limited, and that they’re far weaker than pure logic puzzles.

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• Using FizzBuzz to Find Developers who Grok Coding
• On occasion you meet a developer who seems like a solid programmer. They know their theory, they know their language. They can have a reasonable conversation about programming. But once it comes down to actually producing code they just don’t seem to be able to do it well.

• An example of a Fizz-Buzz question is the following:

   

  Write a program that prints the numbers from 1 to 100. But for multiples of three print “Fizz” instead of the number and for the multiples of five print “Buzz”. For numbers which are multiples of both three and five print “FizzBuzz”.

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• Interface Design
   Best Practices in Object-Oriented API Design in Java
   by Bill Venners

• Canoo WebTest

     

    Canoo WebTest is a free Open Source tool for automated testing of web applications  in a very effective way.

• How Java needs to become cleaner

  • Sure sounds like he's talking Scala to me!

• Switching to Cassandra
• I train database administrators around the world, and if there’s one thing I see over and over, it’s that people just don’t use the features built into the product.  They’re not using the built-in index tools that can make their servers faster.  They’re not checking fragmentation.  Hell, half the time they’re not even checking data integrity or doing backups.

• Recently I have been exploring the NoSQL options for .NET and specifically a database called Cassandra.  In case you haven’t heard of Cassandra before, it is a decentralized, fault-tolerant, elastic database designed by Facebook for high availability.

• Purely Functional Retrogames, Part 1
• When I started looking into functional languages in 1998, I had just come off a series of projects writing video games for underpowered hardware: Super Nintendo, SEGA Saturn, early PowerPC-based Macintoshes without any graphics acceleration. My benchmark for usefulness was "Can a programming language be used to write complex, performance intensive video games?"
• I had no idea how to structure the most trivial of games without using destructive updates.
• If Pac-Man eats a dot, the maze array is updated. If Pac-Man hits a blue ghost, that ghost's structure is update to reflect a new state.
• In a purely functional language, none of this works. If Pac-Man eats a dot, the maze can't be directly updated. If Pac-Man hits a blue ghost, there's no way to directly change the state of the ghost. How could this possibly work?

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• User friendly form validation with Wicket
• By default Wicket shows error messages together in a single place in the HTML form. This has some drawbacks to usability, especially if you have long forms with lots of fields. Read further for a tutorial exploring possibilities to improve the location of the error on the page, thereby improving usability.

• Definition lists – misused or misunderstood?

• Using Wicket Tags

• This seems to come up a lot: "Is there a behavior (or some other way) for having a field receive the focus when the page loads?
• In the above, a DefaultFocusBehavior is attached to the first form field of the right type.

• Worst Case Complexity
• What is the right complexity measure for algorithms?
• Claude Shannon is the father of information theory, who–while at Bell Telephone Labs– wrote the seminal paper that created the field in 1948.
• His famous paper set out the basic framework of information theory that is still used today: a message, an encoder, a channel with noise, a decoder.

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• Fancy Form Design Using CSS

• Regular Expression Test Page

• Use "Protocol Buffers" serialization from your .NET code