Thoughts on agile software development
Some algorithms are real classics and yet nobody really knows them. Day in, day out, everyone is happy about the beautiful wrapping of their text in the word processor, but why does the text actually look so beautiful spread across the lines?
The title of this article is no mistake. Anyone who has looked at the FreshMarker Random plugin recently will probably have discovered the new sentence and paragraph built-ins. These two bilt-ins support the library with the generation of the famous Lorem Ipsum pseudo-texts. Without delving deep into history, the Lorem Ipsum texts are a corruption of a Cicero text and serve as dummy texts.
A fundamental assumption of software developers is that the system libraries are error-free and perform well. Every now and then you are taught better, but after a while the memories fade and you hang on to the original misconceptions.
FreshMarker is quite a small library, about 475 KB in size. Therefore there is always room to make a few small additions. One of these is the display of numbers and loop variables with Roman numerals.
With Partial Template Reduction, the template is filled with a fraction of the necessary data and thus simplified as far as possible. This articel presents the first part of the implementation.
The Rocinante library has now passed some important milestones. It can read and write messages and masters the scalar base types. The next step is now to support Repeated Fields. Repeated fields are the Protocol Buffer counterpart to lists and arrays in other protocols.
When storing data, their temporal changes are often not sufficiently taken into account. The following example of a club member database shows the problems of simplified temporal data storage and the advantages of bitemporal data storage.
In the first article on Project Rocinante, we discussed the processing of Protocol Buffer definition files with CongoCC. In this post we will create the first Java classes based on this definitions.
Bei der Entwicklung von Software handelt es sich immer um die Formulierung von Lösungen in Form von Software. Söll die Software eine gute Lösung für ein Problem sein, dann sind Design Pattern eine gute Hilfe. Design Pattern sind Musterlösungen für typische Probleme in der Softwareentwicklung. Wer sie kennt, entwickelt nicht nur Software, die eine etablierte Lösungsstrategie verfolgt, sondern erhöht auch den Wiedererkennungswert für Kollegen und reduziert die Entwicklungszeit.
Für jedes Design Pattern gibt es ein entsprechendes Problem und beim Memento Pattern ist es die Frage, wie der Zustand eines Objekts zwischengespeichert werden kann, ohne seine interne Struktur zu entblößen.
Im ersten Teil zu der IBAN und BIC Validierung wurden erste Implementierungen vorgestellt um die syntaktische Korrektheit von IBAN und BIC zu prüfen und bei der IBAN zusätzlich die Prüfsumme zu nutzen. In diesem Beitrag sollen zusätzliche landesspezifische Eigenschaften genutzt werden. Insbesondere die Informationen der Deutschen Bundesbank zu den deutschen Geldinstituten.