English: runnel
Tutoring English, new words are always interesting – especially ones with everyday meanings. runnel: a brook. Source: Mish, Frederick C. (editor). Merriam-Webster Dictionary. Springfield: Merriam-Webster, 2004.
Author: Jack
Perl regex: horizontal space
Self-tutoring about Perl regular expressions: the tutor makes an observation. Perl has the interesting character class \h that signifies “horizontal whitespace.” It can be very useful to capture a word in a sentence. Suppose, for instance, you want to capture …
Retrospect: the stables
Self-tutoring about people and events from the past: the tutor reflects…. In the village I lived when I was 10-13, there was a little one-room rec centre. Next to it were tennis courts. Land usage is different between growing places …
JavaScript regex: boundaries
Self-tutoring about regular expressions with JavaScript: the tutor mentions the idea of the boundary condition. In JavaScript regex, a boundary condition can mean a whitespace or punctuation before or after a word. That’s my understanding, anyway. Source: developer.mozilla.org
[Li|U]nix: “other” characters in file names
Self-tutoring about Unix: the tutor mentions accessing a file name that has non-word characters. Sometimes you’ll look in a directory and you might see a file name such as this(file).txt Yet, if you try to refer to that file in …
Can “tack” mean “-“?
Self-tutoring about comp sci terminology: the tutor looks into a point of usage. Apparently one spoken way to indicate “-” (dash, hyphen, minus, or whatever you call it) is “tack.” I encountered this today: apparently it’s common in some circles. …
Retrospect: Judy
Self-tutoring about people and events from the past: the tutor mentions a good memory. When I arrived at a new elementary school in April, grade 4, I think Judy might’ve been in my class. Yet, it had more than 25 …
Word: underline color
Self-tutoring about using MS Word: the tutor mentions underline color. I asked someone the other day if they realize that, in MS Word, you can underline text in a different color from the text itself. While they’ve used Word much …
[Li|U]nix: awk, part 0
Self-tutoring about Linux: the tutor mentions awk. awk is a utility for getting values from tabulated data. It works line by line. For instance, awk ‘{print $2}’ input.txt will print the second field in each record of input.txt. Source: geeksforgeeks.org
[Li|U]nix: how to get your uid
Self-tutoring about using Linux: the tutor mentions a way to find your own uid. Set a task going such as sleep 360 & & in the command above puts it to the background so you can still run the terminal. …