Regex (Regular Expression)
Regular expressions are delineated with two forward slashes, optionally followed directly with supported flags
Here are some examples
/[a-z]/
/[a-zA-Z0-9]/gi
Supported Flags
A flag changes the default searching behavior of a regular expression. It makes a regex search in a different way.
A flag is denoted using a single lowercase alphabetic character.
joelang supports these flags, each serving a different purpose.
| Flag | Name | Purpose |
|---|---|---|
g | Global | Finds all occurences |
i | Ignore casing | Makes the regular expression ignore case |
m | Multiline | Makes the boundary characters ^ and $ match the beginning and end of every line instead of the beginning and end of the string |
s | Dot all | Makes the wild character . match newlines as well |