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Software Development
How to use SQL PIVOT to Compare Two Tables in Your Database
This can happen ever so easily. You adapt a table by adding a new column: …
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Core Java
Interface Evolution With Default Methods – Part I: Methods
A couple of weeks back we took a detailed look into default methods – a feature introduced in Java 8…
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Core Java
Using Java 8 Lambda expressions in Java 7 or older
I think nobody declines the usefulness of Lambda expressions, introduced by Java 8. However, many projects are stuck with Java…
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Software Development
Code For the User, Not for Yourself
First, no matter what the methodology is, we all write software for our users (a.k.a. customers, project sponsors, end users,…
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Core Java
Utility Classes Have Nothing to Do With Functional Programming
I was recently accused of being against functional programming because I call utility classes an anti-pattern. That’s absolutely wrong! Well,…
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Software Development
Interpret Page Fault Metrics
A page fault occurs when a program requests an address on a page that is not in the current set…
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Software Development
How to Extract a Date Part in SQL
The Modern SQL Twitter account (by Markus Winand) published a hint about how to extract a date part in SQL:…
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Groovy
GGTS: Clean up Grails 2.0 output
Have you ever had in Groovy/Grails Tool Suite (GGTS) that console output, by a running Grails application, which is exactly…
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Software Development
Quick, Cheap, Quality: choose two
It is old and common wisdom. Even printed on billboard of the mechanics shop where my car is usually repaired.…
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