| Anchors | The start or end of a string |
| as.regex | Convert or test for regex objects |
| Backreferences | Backreferences |
| capture | Capture a token, or not |
| CharacterClasses | Class Constants |
| char_class | A range or char_class of characters |
| ClassGroups | Character classes |
| Concatenation | Combine strings together |
| DateTime | Date-time regexes |
| escape_special | Escape special characters |
| exactly | Make a regex exact |
| format.regex | Print or format regex objects |
| get_weekdays | Get the days of the week or months of the year |
| IsoClasses | ISO 8601 date-time classes |
| literal | Treat part of a regular expression literally |
| lookahead | Lookaround |
| modify_mode | Apply mode modifiers |
| number_range | Generate a regular expression for a number range |
| or | Alternation |
| rebus | rebus: Regular Expression Builder, Um, Something |
| recursive | Make the regular expression recursive. |
| regex | Create a regex |
| repeated | Repeat values |
| ReplacementCase | Force the case of replacement values |
| roman | Roman numerals |
| SpecialCharacters | Special characters |
| Unicode | Unicode classes |
| UnicodeGeneralCategory | Unicode General Categories |
| UnicodeOperators | Unicode Operators |
| UnicodeProperty | Unicode Properties |
| whole_word | Match a whole word |
| WordBoundaries | Word boundaries |
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.