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22 Cards in this Set

  • Front
  • Back
\b
Word boundary
\B
Word nonboundary
\d
Numeral 0 through 9
\D
Non-numeral
\s
Single white space
\S
Single nonwhite space
\w
Letter, numeral or underscore
\W
Not letter, numeral or underscore
.
Any character except newline
[...]
Character set
[^...]
Negated character set
*
Last character occurring zero or more times
?
Last character occurring zero or one time
+
Last character occurring one or more times
{n}
Last character occurring exactly n times
{n,}
Last character occurring n or more times
{n,m}
Last character occurring at least n, at most m times
^
Pattern occurring at the beginning of the string
$
Character occurring at the end of the string
g
All occurrences of the pattern; that is, (g)lobal
i
Case (i)nsensitive occurrences of the pattern
|
OR operator