What are anchors in regular expressions in C#?
Anchors are constructs in regular expressions in C#. It allows a match to succeed or fail depending on the current position in the string. The following table lists the anchors.
| Assertion |
Description |
Pattern |
Matches |
| ^ |
The match must start at the beginning of the string or line |
^\d{3} |
"567" in "567-777-" |
| $ |
The match must occur at the end of the string or before \nat the end of the line or string. |
-\d{4}$ |
"-2012" in "8-12-2012" |
| \A |
The match must occur at the start of the string. |
\A\w{3} |
"Code" in "Code-007-" |
| \Z |
The match must occur at the end of the string or before \n at the end of the string. |
-\d{3}\Z |
"-007" in "Bond-901-007" |
| \z |
The match must occur at the end of the string. |
-\d{3}\z |
"-333" in "-901-333" |
| \G |
The match must occur at the point where the previous match ended. |
\\G\(\d\) |
"(1)", "(3)", "(5)" in "(1)(3)(5)[7](9)" |
| \b |
The match must occur on a boundary between a \w(alphanumeric) and a \W(nonalphanumeric) character. |
\w |
"R", "o", "m" and "1" in "Room#1" |
| \B |
The match must not occur on a \b boundary. |
\Bend\w*\b |
"ends", "ender" in "end sends endure lender" |
Published on 18-Sep-2018 15:51:12
