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Selfwritten Util Libraries Today we have really good libraries with our programming languages and they cover a lot of things. The funny thing is, that we usually end up writing some Util-classes like StringUtil, CollectionUtil, NumberUtil etc. that cover some common tasks that are not found in the libraries that we use. Usually it is …
„Some Thoughts about Incompleteness of Libraries“ weiterlesen
I have visited Scala Days in Berlin 2016-06-15 to 2016-06-17. A little remark on the format might be of interest. The conference is scheduled for 3 days. On the first day, there is only one speech, the first keynote, some time in the late afternoon. During Scala Days 2015 the rest of the day was …
When Java was created, the concept of operator overloading was already present in C++. I would say that it was generally well done in C++, but it kind of breaks the object oriented polymorphism patterns of C++ and the usual way was to have several overloaded functions to allow for all n² combinations. In the …
„Operator Overloading“ weiterlesen
The type system in Java makes a difference between so called „primitives“, which are boolean, byte, char, int, long, float and double and Objects, which are anything derived from Object in object oriented philosophy, including the special case of arrays, which I will not discuss today. Primitive types have many operations that are kind of …
„Primitives, Objects and Autoboxing“ weiterlesen
Dealing with numeric types in Perl is not as strait-forward as in other programming languages. We can use „scalars“ out of the box, but then we get floating point numbers, more precisely what is called „double“ in most programming languages. This is kind of ok for trivial programs, but we should make a deliberate choice …
„Numeric types in Perl“ weiterlesen
Perl 6 has silently reached its first production ready release on Christmas 2015, called v6c. It will be interesting to explore what this language can do, which features it offers and how it compares to existing relevant and interesting languages like Java, C, Ruby, Perl (5), Clojure, Scala, F#, C++, Python, PHP and others in …
Deutsch Strings in Java and many other JVM-languages consist of Unicode content and are encoded as utf-16. It was fantastic to already consider Unicode when introducing Java in the 90es and to make it the only reasonable way to use strings, so there is no temptation to start with a „US-ASCII“-version of a software that …
„UTF-16 Strings in Java“ weiterlesen
A few decades ago most programming was performed in Cobol (I do not want to shout it), Fortran, Rexx and some typical main frame languages, that hardly made it to the Linux-, Unix- or MS-Windows-world. They are still present, but mostly used for maintenance and extension of existing software, but less often for writing new …
„Will Java, C, C++ and C# be the new Cobols?“ weiterlesen
Unit testing has fortunately become an important issue in many software projects. The idea of automatic software based unit and integration tests is actually quite old. The typical Linux software that is downloaded as source code and then built with steps like tar xfzvv «software-name-with-version».tar.gz cd «software-name-with-version» ./configure make sudo make install often allows a …
„Frameworks for Unit Testing and Mocking“ weiterlesen
Very soon we will have the opportunity to participate in advanced Perl trainings and even some trainings about presentations. Here are the Details. I found these trainings useful, when I visited them. They are done by Damian Conway, one of the core developers of the Perl programming language. The courses will be held in English. …
„Perl Training in Switzerland“ weiterlesen