What does \d+ mean in a regular expression?
What does \d+ mean in a regular expression ?
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What does \d+ mean in a regular expression?
\dis a digit (a character in the range[0-9]), and+means one or more times. Thus,\d+means match one or more digits.For example, the string
"42"is matched by the pattern\d+.You can also find explanations for pieces of regular expressions like this using a tool like Regex101 (online, free) or Regex Coach (downloadable for Windows, free) that will let you enter a regular expression and sample text, then indicate what (if anything) matches the regex. They also try to explain, in words, what the regular expression does.