Why Are Dashes Not Used in Variable and File Naming?

The main reason dashes are typically avoided in variable names is that they are often interpreted as a subtraction operator in many programming languages. For instance, if you wrote `example-variable`, it could be read as `example - variable`, which creates confusion for the parser. That's why you'll see a lot of languages disallow dashes in variable names but allow them in file names without issues.

You’re right that dashes make names look cleaner and are great for readability! In practice though, most programming languages just don’t allow dashes for variables. It's mostly a historical convention based on how identifiers are parsed in the language specifications.

Dashes are indeed safe for file names across various systems, making them a good separator for human readability. In coding, however, using underscores or camelCase helps avoid ambiguity when the code is parsed since the dash signifies an operation in most languages. It comes down to the standard practices that evolved along with programming languages.

Good question! The use of dashes, or 'kebab-case' as it's called in some contexts, is really down to parsing rules in most programming languages. The dash often indicates subtraction, while underscores are seen as valid identifiers. For files, however, dashes are perfectly fine and often used as separators, especially in URLs or other file structures.

Another thing to keep in mind is that naming conventions can vary between programming languages and communities. For example, Python commonly uses snake_case, and dashes are generally discouraged in code but are acceptable in file names. It all comes down to following the conventions of the language you're working with for clarity.