IT Sky Consulting GmbH
As frequent readers might have observed, I like the concept of the Carry Bit as it allows for efficient implementations of long integer arithmetic, which I would like to use as default integer type for most application development. And unfortunately such facilities are not available in high level languages like C and Java. But it …
„How to recover the Carry Bit“ weiterlesen
Microsoft’s CEO Satya Nadella announced that Microsoft is withdrawing its support for the MS-Windows platform and concentrating on its core business, which is „services – services – services“. For a transition period of a few months, support for MS-Windows can still be obtained at an increased rate from Microsoft, but development and support have become …
„Microsoft dropping Windows-Support“ weiterlesen
Having discussed to some extent about strings and text data, it is time to look at the other case, binary data. Usually we think of arrays of bytes or sequences of bytes stored in some media. Why bytes? The 8-bit-computers are no longer so common, but the byte as a typical unit of binary data …
When using an arguable stupid American date format, today’s date looks like „03/14/15“ instead of 2015-03-14, which are the first few digits of . Now we all know how to calculate , we just use the Taylor series of or , which unfortunately does not converge too well when used naïvely, but there are tricks …
Some years ago Ruby in conjunction with rails was an absolute hype. In the Rails User Group in Zürich we had meetups with 30 people every two weeks. The meetings every two weeks have been retained, but often we are just five to ten people now. Is the great time of Ruby over or is …
„Why I still like Ruby“ weiterlesen
The UTF-8 format has the disadvantage that the length of characters and code points varies. Accessing a given position counted in characters is only possible by starting from the beginning or by providing an indexing structure. It is a good idea to find a balance between size and speed. So indexing blocks of several kilobyte …
„Indexing of long utf-8 files or strings“ weiterlesen
Most of our rounding methods are based on arithmetic rounding. Please refer to the nomenclature described in Residue Class Rounding. So we can base our rounding on a metric and the most obvious choice is the absolute value of the difference of the two parameters, . That is what everybody does and nothing else really …
„Geometric and Harmonic Rounding“ weiterlesen
Since I did not get a lot of feedback, possibly because wordpress denied to accept the vote, I can now see that continuing the blog in English or German seems to be equally popular or unpopular. I have provided the articles of almost three months almost completely in both languages, but now I intend to …
„The language issue“ weiterlesen
The comment function does not seem to work after some software upgrades. It is necessary to check write permissions on the directory /wp-content/plugins/si-captcha-for-wordpress/captcha/cache, then it will work again. So you can write comments again, I will only reject spam.
Monads? Easy! A Monad over X simply is a Monoid in the Category of Endofunctors of X. Monads? Really! Monads are a concept in mathematics Algebra is an area of mathematics Category theory is an abstraction of algebra. Monads are defined in category theory Remember: in category theory we talk about infinity beyond cardinality of …