Matching Digits Preceded by a Dollar Sign:

• Text: "The price is $10"
• Regex: (?<=\$)\d+
• Result: Matches 10.

Matching Words Preceded by "Hello":

• Text: "Say Hello world"
• Regex: (?<=Hello\s)\w+
• Result: Matches world.

Matching URLs Preceded by "https://":

• Text: "Visit our website at https://www.example.com"
• Regex: (?<=https:\/\/)\S+
• Result: Matches www.example.com.

Matching Dates Preceded by "Date: ":

• Text: "Date: 2024-02-13"
• Regex: (?<=Date: )\d{4}-\d{2}-\d{2}
• Result: Matches 2024-02-13.

Matching File Names Preceded by "File: ":

• Text: "File: document.txt"
• Regex: (?<=File: )\S+
• Result: Matches document.txt.

Matching Words Preceded by a Comma:

• Text: "apple, orange, banana"
• Regex: (?<=,\s)\w+
• Result: Matches orange and banana.

Matching Numbers Preceded by "Number: ":

• Text: "Number: 12345"
• Regex: (?<=Number: )\d+
• Result: Matches 12345.

Matching Words Preceded by "Title: ":

• Text: "Title: The Great Gatsby"
• Regex: (?<=Title: )\w+
• Result: Matches The.

Matching Email Domains Preceded by "@":

• Text: "Contact us at info@example.com"
• Regex: (?<=@)\S+
• Result: Matches example.com.

Matching Words Preceded by "Word: ":

• Text: "Word: example"
• Regex: (?<=Word: )\w+
• Result: Matches example.