For instance, the regex foo matches the string foo, the regex +:\d+ matches string fragments like F:1 and GO:30, and the regex (?<=)(?=) matches the position in the string CamelCase where we shift from a lower-case letter to an upper-case letter. Those text strings describe patterns to find text or positions within a body of text.
This page explains what makes this site special among all other regex sites, but first let's answer a burning question:
And so can you! This regex tutorial, one of the most detailed on the web, takes you all the way to mastery. Rex eats regular expressions for breakfast.
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