IT Sky Consulting GmbH
The language Perl 6 has been announced to be production ready by the beginning of this year. Its implementation is Rakudo, while the Perl 6 programming language itself is an abstract language definition that allows any language implementation that passes the test suite to call itself an Perl 6 implementation. The idea is not totally …
„Integers in Perl 6“ weiterlesen
In the late 1990es there was a real hype about XML. Tons of standards evolved and it was a big deal to acquire sound knowledge of it. It has been some success, because it is still around and very common almost 20 years later. I would say that the idea of having a human readable …
These days we often have to run a large number of servers, and the times where we could afford to manually log into each one to do system administration tasks are mostly over. It turns out that there are always different approaches to deal with this. In most cases we are talking about virtual hosts, …
„Running a Large Number of Servers“ weiterlesen
The English term „music“ refers to what we actually listen to, but also to how we write it down on paper, like this: This musical notation is actually like a programming language, because it allows to write down complex musical pieces on paper. But there is of course more to it than just mechanically playing …
„Brass Music and what we can learn for IT“ weiterlesen
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 …
The social business online network LinkedIn will probably be bought by Microsoft for around 26’200’000’000 USD. Even if Microsoft has become a bit more trustworthy with Nadella then it was with Ballmer it remains an interesting question how much we should trust them concerning our data. The same issue arouse with Skype and other acquisitions …
„Linkedin will probably be bought by Microsoft“ weiterlesen
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
I just found this usability pearl: After entering a credit card number as usual with spaces between the groups of four digits, the web page complained like this: Yes, it is easy to allow spaces. Just match the following regex /^\s*\d{4}\s*\d{4}\s*\d{4}\s*\d{4}\s*$/ and then remove the spaces when processing it, but do not let the user …
„Usability „Pearl““ weiterlesen
We all know that Java uses a „virtual machine“ that is it simulates a non-existing hardware which is the same independent of the real hardware, thus helping to achieve the well known platform independence of Java. Btw. this is not about virtualization like VMWare, VirtualBox, Qemu, Xen, Docker and similar tools, but about byte code …
„Virtual machines“ weiterlesen