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THTim Hiltontechblog.timhilton.xyzJun 3 · 2 min read

TIL capitalising letters with regex

Background My regex skills have improved since I wrote Just enough regex to get going, though I still think it's a good starting point for a developer who is new to regex. In that article I wrote thi

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RKRitusmoi Kaushikritusmoikaushik.hashnode.devMay 27 · 8 min read

Parsing Indian GST Invoices With Regex, Not a Model /

A GST invoice PDF looks structured to a human and is chaos to a parser. The total sits bottom-right on one vendor's layout and mid-page on another's. The seller GSTIN and the buyer GSTIN are the same

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Aartbaker2026artbakersdevblog.hashnode.devApr 16 · 2 min read

50 Regex Patterns Every Developer Should Have Bookmarked

Every time I need a regex, I end up Googling the same patterns. So I made myself a reference — here are 15 of the most useful from my full 50-pattern cookbook. Each works across Python, JavaScript, Ruby, Go, and any PCRE engine. Validation Email (si...

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DGDevTools Guidedevtoolsguide.hashnode.devMar 3 · 7 min read

Regex and Text Processing Tools for Developers

Regex and Text Processing Tools for Developers Text processing is the unglamorous core of developer work. Parsing logs, reshaping JSON, extracting fields from CSV, cleaning up data before import -- you do it constantly and the right tool turns a 30-m...

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AAbolFazlmp7y0.hashnode.devFeb 27 · 4 min read

From Client Regex to Server Bug: We Hunted CORS and CSRF

Introduction CORS misconfigurations are everywhere. But spotting the real ones takes more than payloads — it takes understanding the trust model hidden beneath the surface. This is a short story of ho

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SKShubham Kumar Singhblog.realdev.clubFeb 19 · 3 min read

Regular Expressions (Regex) in JavaScript

Regular Expressions (Regex) help us search, match, and manipulate text patterns inside strings. 1. Basic Format of Regex /pattern/flags Example: /hello/g / → Start and end of regex hello → pattern

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AWAdam Wilsonhiadam.hashnode.devFeb 16 · 3 min read

Using Qlik Regex to Organise Messy Comment Fields

Free-text fields are both a blessing and a curse. They give users flexibility, but from a reporting point of view they’re often messy, inconsistent, and hard to work with. In this case, a customer had a Comments field where users manually typed infor...

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DMDiwash Mainalidiwashmainali.hashnode.devFeb 9 · 15 min read

The Zocdoc Heist: How I Reverse-Engineered a $2.8B Healthcare Platform and Extracted Its Beating Heart

TLDR; In the rapidly evolving landscape of healthcare technology, the ability to aggregate and synchronize real-time data across fragmented provider networks is a critical capability. Zocdoc, a pioneer in the patient-provider matching space, presents...

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SSSamir Shumanblog.devmansam.netJan 30 · 14 min read

Cutting Through JavaScript RegEx 🍕

title: "Cutting Through JavaScript RegEx 🍕" subtitle: "🚫🍍 /[^pineapple]/" slug: cutting-through-javascript-regex tags: javascript, regex, tutorial cover: domain: publishAs: It's been a while since my last post. I've gotten back into doing coding c...

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MCMarcus Costamvfc.hashnode.devDec 30, 2025 · 6 min read

Busca Case Insensitive no MongoDB: Pare de torturar sua CPU com Regex

Você que usa o MongoDB com certeza já passou por isso. O usuário cadastra “Marcus”, “MARCUS” ou “MaRCus” (porque usuários são seres criativos e caóticos), e na hora de buscar, ele digita “marcus” e reclama que o sistema “não traz nada”. O vilão aqui ...

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#regex

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Trending tags this week

TIL capitalising letters with regex

Parsing Indian GST Invoices With Regex, Not a Model /

50 Regex Patterns Every Developer Should Have Bookmarked

Regex and Text Processing Tools for Developers

From Client Regex to Server Bug: We Hunted CORS and CSRF

Regular Expressions (Regex) in JavaScript

Using Qlik Regex to Organise Messy Comment Fields

The Zocdoc Heist: How I Reverse-Engineered a $2.8B Healthcare Platform and Extracted Its Beating Heart

Cutting Through JavaScript RegEx 🍕

Busca Case Insensitive no MongoDB: Pare de torturar sua CPU com Regex