Regular
Expressions
101
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Explanation
/
^
(?<date>
[^
\s
]
+
)
(?<time>
[^
\s
]
+
)
-
(?<message>
.
*
)
$
/
^
asserts position at start of the string
Named Capture Group
date
(?<date>
[^
\s
]
+
)
Match a single character not present in the list below
[^
\s
]
+
matches the previous token between
one
and
unlimited
times, as many times as possible, giving back as needed
(greedy)
\s
matches any whitespace character (equivalent to
[\r\n\t\f\v
]
)
matches the character
with index
32
10
(
20
16
or
40
8
) literally (case sensitive)
Named Capture Group
time
(?<time>
[^
\s
]
+
)
Match a single character not present in the list below
[^
\s
]
+
matches the previous token between
one
and
unlimited
times, as many times as possible, giving back as needed
(greedy)
\s
matches any whitespace character (equivalent to
[\r\n\t\f\v
]
)
-
matches the characters
-
literally (case sensitive)
Named Capture Group
message
(?<message>
.
*
)
.
matches any character (except for line terminators)
*
matches the previous token between
zero
and
unlimited
times, as many times as possible, giving back as needed
(greedy)
$
asserts position at the end of the string, or before the line terminator right at the end of the string (if any)
Match Information
Your regular expression does not match the subject string.
Try launching the debugger to find out why.
Quick Reference
Regular Expression
v1
No Match
/
/
Test String
Regular
Expressions
101
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