RegEx: Unterschied zwischen den Versionen

Version vom 28. August 2021, 14:33 Uhr

Notes for RegEx respectively Regular Expressions.

Character Types
Type	Example
Literal	a b c 1 2 3
Meta characters	. [[ ] { } ? * + \| ( ) ^ $

Meaning of meta characters
Meaning	Example
Character class digit	d
Character class character	w
Character class whitespace	s
Inversion of Character Classes	D, W, S, [^abc]
Character class range	[a-c]
Single Character	.
Grouping with alternatives	Tues)day
Word and text boundaries	b ^ $

@@ Zeile 30: / Zeile 30: @@
 |-
 | Single Character  || .
+|-
+| Grouping with alternatives  || (Mon|Tues)day
+|-
+| Word and text boundaries  || b ^ $
+|}
+{| class="wikitable"
+|+ style="text-align: left" | Multiplier
+! Multiplier !! Example
 |-
 | Multiplier  || {42}, {4,20}
 |-
-| One or multiple characters || +
+| One or more characters || +
 |-
 | Zero or one character  || ?
 |-
-| Zero or multiple characters  || *
+| Zero or more characters  || *
-|-
-| Grouping with alternatives  || (Mon|Tues)day
-|-
-| Word and text boundaries  || b ^ $
 |}