Für neue Projekte verfügbar

Ich bin ab Anfang September 2020 für neue Projekte verfügbar. Auf der Webseite meiner Firma IT Sky Consulting kann man sehen, was ich anbiete…

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ScalaUA 2020

I like visiting ScalaUA conference in Kiev every year in March or April. I did so in 2017, 2018 and 2019. So for 2020 it was kind of difficult to perform a regular conference. So there are two options, either it could have been cancelled or it could have been postponed. That is what all […]

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Borrow and Carry Bit for Subtraction

Similar to the usage of the carry bit when adding there are mechanisms for subtracting that allow to integrate the result of subtraction of the lower bits into the subtraction of the next higher block of bits, where necessary. There are two ways to do this, that are trivially equivalent by a simple not operation: […]

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Orthodox Christmas 2018/2019

Orthodox Christmas in some countries, for example in Ukraine is on 7th of January. So to all readers, who have Christmas on 7th of January: С Рождеством! — Hyvää Joulua! — καλά Χριστούγεννα! — Buon Natale! — Prettige Kerstdagen! — З Рiздвом Христовим! — Merry Christmas! — Срећан Божић! — God Jul! — ¡Feliz Navidad! […]

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How to draw lines, circles and other curves

These ideas were developed more than 30 years without knowing that they were already known at that time… Today the graphics cards can easily do things like this in very little time. And today’s CPUs are of course really good at multiplying. So this has lost a lot of its immediate relevance, but it is […]

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2019 — Happy New Year

Gott nytt år! — Godt nytt år! — Felice anno nuovo! — Καλή Χρονια! — Щасливого нового року! — Срећна нова година! — С новым годом! — Feliĉan novan jaron! — Bonne année! — FELIX SIT ANNUS NOVUS — Gullukkig niuw jaar! — Un an nou fericit! — Frohes neues Jahr! — Happy new year! […]

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Christmas 2018

Feliĉan Kristnaskon! — Frohe Weihnachten! — God Jul! — Merry Christmas! — Joyeux Noël! — クリスマスおめでとう ; メリークリスマス — Срећан Божић! — Buon Natale! — Hyvää Joulua! — З Рiздвом Христовим! — ميلاد مجيد — С Рождеством! — Crăciun fericit! — ¡Feliz Navidad! — καλά Χριστούγεννα! — Natale hilare! — God Jul! — Prettige Kerstdagen! […]

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Logging

Deutsch Software often contains a logging functionality. Usually entries one or sometimes multiple lines are appended to a file, written to syslog or to stdout, from where they are redirected into a file. They are telling us something about what the software is doing. Usually we can ignore all of it, but as soon as […]

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Carry Bit, Overflow Bit and Signed Integers

It has already been explained how the Carry Bit works for addition. Now there was interest in a comment about how it would work for negative numbers. The point is, that the calculation of the carry bit does not have any dependency on the sign. The nature of the carry bit is that it is […]

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Christmas — Weihnachten — Рождество 2017

Bon nadal! — Priecîgus Ziemassvçtkus — З Рiздвом Христовим — Buon Natale — Bella Festas daz Nadal! — С Рождеством — Срећан Божић — καλά Χριστούγεννα — God Jul! — Feliĉan Kristnaskon — ميلاد مجيد — Feliz Navidad — Glædelig Jul — Fröhliche Weihnachten — Joyeux Noël — Hyvää Joulua! — クリスマスおめでとう ; メリークリスマス — […]

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