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Meaningless Whitespace in Textfiles
We use different file formats that are more or less tolerant to certain changes. Most well known is white space in text files. In some programming languages white space (space, newline, carriage...
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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...
View ArticleTruffleRuby
The language Ruby is one of the most beautiful languages. A lot of things can be done, it has a good level of abstraction, it has chosen some very good defaults, has provided some great ideas that I...
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LongDecimal
Disclaimer: This article is an occasion, where you might need some of the presumably useless mathematics that you might have learned in school and university. If this bothers you, maybe you should wait...
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Flashsort in Ruby
Deutsch There is a simple implementation of Flashsort in Ruby, after having already provided an implementation in C. The C-implementation is typically faster than the libc-function qsort, but this...
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How to calculate Square Roots and Cubic Roots
The functions sqrt and sometimes even cbrt are commonly available, but it is nice to see how they can be calculated. There are several approaches, but the most popular ones are Newton’s method and an...
View ArticleObject Creation: Builder vs. Constructor vs. Setter
When we create new objects, we are basically confronted with the need to provide at least one construction pattern. Of course depending on the language we have more or less three ways to go that are...
View ArticleGetters and Setters
Deutsch When programming in Java, it is kind of part of the language to write classes with attributes and equip these attributes with „getters“ and „setters“. You could do otherwise, but you just...
View ArticleGit for Linux System Engineering
Now that git has become the standard version control software, which is used by software developers. Now for system engineering and system administration purposes it used to be an approach to just...
View ArticleAutomatic editing
For changing file contents, we often use editors. But sometimes it is a good idea to do this from a script and do a change to many files at once or do the same kind of changes often. The classic...
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