The tutor continues about programming with Perl. Tutoring computer science, subroutines have both theoretical and practical importance. Back in my November 14 post I opened up the discussion on subroutines. In computer science, a subroutine is a self-contained body …
Tutoring programming, conversions between strings and arrays are relevant. The tutor shows an easy way to do it in Perl. Converting a string to a character array is a common task in small programs, especially ones that accept user …
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Tutoring computer science, a tenet you need to impart is the use of loops to accomplish repetitive tasks. The tutor introduces the while loop. Every programming language I know of has a “while” loop. A while loop begins by checking …
Tutoring stats, you discuss the median. The tutor introduces a Perl program that finds it. I defined the median back in my May 6 post. It’s preferred over the mean in some realms; I’ll explore the reason another time. Today, …
Tutoring, you often straddle a couple of generations. The tutor reaches back to an old programming tradition…. When I was a kid in the early 80s, computers were very new to have around. To make them more appealing to the …
Tutoring computer science, you deal with constructs that are both ideas and real-life segments of code. The tutor brings forth the idea of subroutines. In old-style programming (ie, during the 70s and 80s), the concept of a subroutine was crucial. …
Tutoring Perl programming, you are aware of so many little tricks Perl contains for doing specific tasks. The tutor shares a fun one. I recall, when I was a kid, a common trick to show off was to fill …
During tutoring, you often need to point out the unexpected details of a language. The tutor brings up a point that is relevant to Perl, but not only Perl…. Back in my October 4 post, I used a Perl construct …
Perl programming: logical comparisons: equals and string equals Read more »
Tutoring computer science, this topic is fundamental. The tutor gives a short program as a focal point. Back in my last post I introduced the if, else construction. Today we’ll look at a sample program that implements it. Let’s …
Tutoring computer programming, some issues that seem negligible become very important to consider. The tutor discusses the status of variables. In computer programming blogs, as well as in some books, you’ll often see the construction if($variable) { these instructions; …