Self-tutoring about PHP comparisons: the tutor begins… In PHP, == means “compare for equality” whereas === means “compare for same type and equality.” Sometimes the difference is important. strpos(longstring, shortstring) tells where, in the longstring, you will find the shortstring. …
Self-tutoring about people, events, and products of the past: the tutor reflects…. I recall, back in grade 5, at Halloween, noticing a new chocolate bar: Choco Loto. I never had one, as far as I remember: I stuck to chocolate …
Self-tutoring about Microsoft Word: the tutor makes an observation. Today, working with Word, I went down a rabbit hole, then didn’t like the result. I wanted to return to the earlier stage of the work, but could I? After an …
Self-tutoring about .net Webforms: the tutor makes an observation. An important idea to know about, in my opinion, is that, with .net Webform applications, commented-out elements on the webform can still cause errors. In other words, you might have elements …
Self-tutoring about the Windows command prompt: the tutor mentions its treatment of double vs single quotes. In many computer languages, double or single quotes are interchangeable or else give similar effect in many situations. Such is not the case with …
Self-tutoring about computer science: the tutor mentions a great utility in Windows cmd. findstr the_string text_file.txt will print each line from text_file.txt that contains the_string. findstr /n the_string text_file.txt will precede each printed line by its number. Source: itechtics.com
Self-tutoring about Python: the tutor mentions the self concept. To Python, when you call an ordinary class method (as opposed to a static one), the object whose method is being called is an implicit parameter. You can call it externally …
Self-tutoring about Python: the tutor continues about reloading a module. In my post from July 24, 2021, I mention import importlib, then importlib.reload(moduleA) in Python. This might be done if you’ve changed moduleA. In my experience, if you tried to …
Self-tutoring about Python: the tutor mentions a favourite test of his. In any programming language, I like to discover how to test the existence of a variable. It’s more straightforward in some than others. Python really shines in this regard, …
Self-tutoring about file conversions: the tutor mentions a utility he uses. I don’t have much proprietary software. Yet, there’re times when people insist on pdfs. What to do? One option – probably the best I know so far – is …