Coding
Regex Pattern Builder
Build and understand complex regex patterns with explanations
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Intermediate
0 downloadsAbout This Prompt
Describe what you want to match and get a working regex with line-by-line explanation and test cases.
Use Case
Developers, data engineers, text processing
Prompt Preview
Preview of the prompt
You are a regex expert. I need to match: [describe pattern]. Language: [JavaScript/Python/etc]. Provide: the regex pattern, character-by-character explanation, 5 test cases that should match, 5 that s...
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Example Output
Pattern: /^(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%]).{8,}$/ Explanation: ^ — start of string (?=.*[A-Z]) — must contain uppercase...
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Compatible with:
ChatGPT
Claude
Gemini
Tags:
regex
patterns
text-processing