Reverse - Special characters and character classes Flashcards
1
Q
Matches any single character except the newline character.
A
.
2
Q
The bracket expression.
A
[…]
3
Q
The negated bracket expression.
A
[^…]
4
Q
Word character Equivalent to [A-Za-z0-9_]
A
\w
5
Q
Non-word characterEquivalent to [^A-Za-Non-word characterEquivalent to [^A-Za-z0-9_]
A
\W
6
Q
Digit characterEquivalent to [0-9]
A
\d
7
Q
Non-digit characterEquivalent to [^0-9]
A
\D
8
Q
Whitespace characterEquivalent to [\f\n\r\t\v\u00A0\u2028\u2029] (\u00A0 means “no-break space”, \u2028 means “line separator”, \u2029 means “paragraph separator”)
A
\s
9
Q
Non-whitespace characterEquivalent to [^\f\n\r\t\v\u00A0\u2028\u2029]
A
\S
10
Q
Word Boundary
Backspace (\x08)
A
\b
11
Q
Form-feed (\x0C)
A
\f
12
Q
Linefeed or newline (\x0A)
A
\n
13
Q
Carriage return (\x0D)
A
\r
14
Q
Tab (\x09)
A
\t
15
Q
Vertical tab (\x0B)
A
\v
