技術雜談

I was assigned by my professor to download some RNA sequences data to my own computer for backup purpose, because the original data server will 繼續閱讀

Sometimes there are no available desktop or laptop running Unix or Linux, but we miss these utilities on Unix. Thanks the efforts of numerous 繼續閱讀

Instead of single application for a proprietary file format, Unix utilities manage text streams. Text streams means not only text files but also 繼續閱讀

Many files on Unix are plain text files. Some examples are text files, markup language files, LaTeX files, source code, Makefiles, and configuration 繼續閱讀

Unix utilities seem arcane and ancient; however, some people still admire them, whereas mouses and touch screens are ubiquitous. By Unix Power 繼續閱讀

Sometimes we want to browse online document for the usages of Perl subroutines or modules. It is boringly repetitive to open the browser and 繼續閱讀

The Entrez Programming Utilities are a interface to Entrez query and database system at the National Center for Biotechnology Information (NCBI). 繼續閱讀

In my [previous post]({{ "/perl/prolog/2014/09/01/perl-cross-prolog-in-ai-prolog/" | prepend: site.baseurl }}), I introduced AI::Prolog, 繼續閱讀

Perl programming can be done in imperative, objective and functional styles. However, Perl lacks direct support in logic programming. Prolog 繼續閱讀

In Perl, you do not need to declare the type of a variable in advance. Sometimes, it is confusing because you do not know the type of the variable 繼續閱讀