Oracle Tutoring, Campbell River, BC
(250) 203-6544 (text) or (250) 830-0295 (talk)
Self-tutoring about Python, but also life: the tutor reflects…. I’ve been working on a second degree the past couple of years. I’m done now, but for a work experience course. I’ll share more about that in coming posts. One language …
Self-tutoring about Python: shallow copy vs deep copy. A deep copy is a new object: if you change its source, the deep copy won’t change. However, if you change the source, a shallow copy will change with it, if the …
Self-tutoring about servlets: the tutor mentions an observation. If there’s the slightest mistake in the web.xml file (tomcat server), you might discover that not only the servlets don’t work, but the tomcat server won’t serve anything at all, not even …
Self-tutoring about Java: the tutor mentions classpath. It might properly be called CLASSPATH. It’s where Java will search for the class you want it to run. Yet, if you’re running a Java program from the command line after compiling it, …
Self-tutoring about Java: the tutor mentions a couple of ideas about Java abstract classes. There are numerous Java versions out there, not all of which necessarily agree on everything. Herein I’m sharing my own experience. In Java, an abstract class …
Self-tutoring about text editors: the tutor mentions his comparison of VS-Code to Notepad++. I’ve used both VS-Code and Notepad++. VS-Code is great, but I find it can strain an older computer. Notepad++ seems to use less resources, so is more …
Self-tutoring about PHP: the tutor mentions its exponent operator. In PHP, 32 is 3**2. This seems to work unless the base is negative. For instance, 2.6**2.9 and 10**(-2/3) will come out correctly, but (-8)**(1/3) won’t, in my experience. Source: php.net
Self-tutoring about regex: the tutor looks into case insensitivity with PHP. From my experience, (?i) makes a php regex match case insensitive. The insensitivity starts from where (in the regex pattern) (?i) appears. Source: stackoverflow.com
Self-tutoring about dot net programming: the tutor mentions case insensitivity in regex. In my experience with dot net forms, (?i) starts case insensitivity in a regular expression. If you want the whole pattern to be matched without case sensitivity, just …
Comp Sci: .net (aka dot net) programming: case insensitive regular expression Read more »
Self-tutoring about how to deal with cross-origin denial: the tutor mentions a workaround. I was experimenting with html canvas, specifically getImageData and putImageData, when I got a cross-origin complaint. The computer wouldn’t execute either getImageData or putImageData because, from its …
Web programming: cross-origin blockage with getImageData or putImageData Read more »