Doesn't Ruby have isalpha?

Question

Like Python? I'm trying to check whether each character in a string is an alphanumeric or not?

Accepted Answer

There's a special character class for this:

```
char.match(/^[[:alpha:]]$/)
```

That should match a single alphabetic character. It also seems to work for UTF-8.

To test a whole string:

```
string.match(/^[[:alpha:]]+$/)
```

Keep in mind this doesn't account for spaces or punctuation.

Solution