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The @ in Your Signup Form Is Doing Nothing: What Email Validation Actually Has to Catch
The @ in Your Signup Form Is Doing Nothing: What Email Validation Actually Has to…
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The Three Digits Most SSN Validators Get Wrong: Why 666-12-3456 and 900-Series Numbers Slip Through
The Three Digits Most SSN Validators Get Wrong You paste 123-45-6789 into a form, the…
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Your Regex Looks Right. It Probably Isn’t.
You write ^[a-z]+@[a-z]+.[a-z]+$. You test one email address. It matches. You ship the validator. Six…
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From File Globs to Regex Patterns in One Line
Most of us have typed a glob — *.txt, src/**/*.js, data-202[0-3].csv — and watched the…
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Why Every US Social Security Number Has Three Forbidden Numbers Hidden Inside
Why This Matters A friend in HR once asked me, "We just plugged in ^d{3}-?d{2}-?d{4}$.…
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One Regex Pattern, 4 Days of Downtime
The regex engine does not warn you. It accepts the pattern, returns true or false,…
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Why Your Regex Patterns Are a Mystery to Everyone — Including You
Why Your Regex Patterns Are a Mystery to Everyone — Including You You’ve written it.…
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Stop Dreading Regex — Let AI Break It Down for You
Stop Dreading Regex — Let AI Break It Down for You If you've ever inherited…
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8 Free Regex Tools That Will Save You Hours of Debugging
# 8 Free Regex Tools That Will Save You Hours of DebuggingAt 2 AM, your…
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8 Free Regex Tools That Actually Solve Real Problems
# 8 Free Regex Tools That Actually Solve Real ProblemsLast month, a regex pattern in…