Understanding Control Characters in Unicode

Yawn, right? But wait, hold on a sec before you hit the snooze button and close this tab, let me tell you why these little guys are actually pretty ***** important (and maybe even kinda cool).

First things first: what exactly is a control character? In programming terms, its any character that doesn’t have a visible representation on your screen. Instead, they serve as instructions for the computer to do something specific like move the cursor or print out a tab. And in Unicode, there are over 100 of these bad boys!

Now, you might be thinking: why would anyone need so many control characters? Well, it turns out that different programming languages and operating systems use them for various purposes. For example, in Python, the backslash character (\) is used to escape special characters like quotes or newlines. In C++, the carriage return (CR) and line feed (LF) are often combined into a single control sequence called a newline (or NL). And in HTML, theres an entire set of control codes for formatting text from bold to italic to underline.

But here’s where things get interesting: Unicode has its own unique set of control characters that are used specifically for handling non-ASCII text. These include things like the zero width joiner (ZWJ) and right-to-left mark (RLM), which allow you to combine multiple scripts or writing systems into a single string without messing up their layout.

For example, let’s say you want to write your name in both English and Arabic on the same line: “John عبد الله”. Without control characters, this would look like a jumbled mess but with ZWJ and RLM, it looks just right!

Control characters might not be as exciting as emojis or memes, but they’re an essential part of the Unicode standard that make working with non-ASCII text a whole lot easier (and less frustrating). And who knows maybe one day well even see them in our dreams!

Later !

SICORPS