Ita Matauriro Enguva Dzose Anoedzwa uye Anonzwisisika  TL; DR: Unogona kuputsa yakaoma yekusimbisa regex kuita zvikamu zvidiki kuti uedze chikamu chega chega uye utaure zvikanganiso chaizvo.  Matambudziko Agadziriswa 😔  Zvakaoma-ku-yedza  zvinogara zvichitaurwa  Kuzivisa kukanganisa kusina kujeka  Kugadzirisa hope dzinotyisa  Matambudziko ekuchengetedza   Mitsetse yakareba uye nzira  Matauriro asingagarike   Primitive Obsession  Kusarudzika kukanganisa  Knowledge silos   Maonero akapera    kugumisa vashandisi Zvikanganiso pasina tsitsi  Related Code Kunhuwa 💨   https://hackernoon.com/code-smell-276-untested-regular-expressions?embedable=true   https://hackernoon.com/how-to-find-the-stinky-parts-of-your-code-part-xxv   https://hackernoon.com/how-to-find-the-stinky-parts-of-your-code-part-i-xqz3evd   https://hackernoon.com/how-to-find-the-stinky-parts-of-your-code-part-i-xqz3evd   https://hackernoon.com/how-to-find-the-stinky-parts-of-your-code-part-xxxvii   https://hackernoon.com/how-to-find-the-stinky-parts-of-your-code-part-xx-we-have-reached-100   https://hackernoon.com/how-to-find-the-stinky-parts-of-your-code-part-ix-7rr33ol  Matanho 👣  Ongorora regex kuti uone zvikamu zvayo zvine musoro.  Dhonza iyo regex kuita diki, yakatumidzwa sub-patterns yechinhu chimwe nechimwe.  Nyora   yega yega-pattern kuti uone kuti inoshanda nemazvo. bvunzo dzeyuniti  Sanganisa akaedzwa madiki-patterns mune yakazara yekusimbisa logic.  Refactor iyo kodhi kuti ipe yakajeka mhosho meseji kune yega yega inotadza chikamu.  Muenzaniso Code 💻  Pamberi 🚨   function validateURL(url) { const urlRegex = /^(https?:\/\/)([a-zA-Z0-9.-]+\.[a-zA-Z]{2,})(\/.*)?$/; // Criptic and untesteable return urlRegex.test(url); }  Mushure 👉   // Step 1: Define individual regex components const protocolPattern = /^(https?:\/\/)/; const domainPattern = /^[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/; const pathPattern = /^\/.*$/; // Step 2: Write unit tests for each component describe("Protocol Validation", () => { test("should pass for http://", () => { expect(protocolPattern.test("http://")).toBe(true); }); test("should pass for https://", () => { expect(protocolPattern.test("https://")).toBe(true); }); test("should fail for invalid protocols", () => { expect(protocolPattern.test("ftp://")).toBe(false); }); }); describe("Domain Validation", () => { test("should pass for valid domains", () => { expect(domainPattern.test("example.com")).toBe(true); expect(domainPattern.test("sub.domain.org")).toBe(true); }); test("should fail for invalid domains", () => { expect(domainPattern.test("example")).toBe(false); expect(domainPattern.test("domain..com")).toBe(false); }); }); describe("Path Validation", () => { test("should pass for valid paths", () => { expect(pathPattern.test("/path/to/resource")).toBe(true); expect(pathPattern.test("/")).toBe(true); }); test("should fail for invalid paths", () => { expect(pathPattern.test("path/to/resource")).toBe(false); expect(pathPattern.test("")).toBe(false); }); }); // Step 3: Validate each part and report errors function validateURL(url) { if (!protocolPattern.test(url)) { throw new Error("Invalid protocol. Use http:// or https://."); } const domainStartIndex = url.indexOf("://") + 3; const domainEndIndex = url.indexOf("/", domainStartIndex); const domain = domainEndIndex === -1 ? url.slice(domainStartIndex) : url.slice(domainStartIndex, domainEndIndex); if (!domainPattern.test(domain)) { throw new Error("Invalid domain name."); } const path = url.slice(domainEndIndex); if (path && !pathPattern.test(path)) { throw new Error("Invalid path."); } return true; } // Step 4: Add integration tests for the full URL validation describe("Full URL Validation", () => { test("should pass for valid URLs", () => { expect(validateURL("https://lesluthiers.com/tour/")).toBe(true); expect(validateURL("https://bio.lesluthiers.org/")).toBe(true); }); test("should fail for invalid URLs", () => { expect(() => validateURL("ftp://mastropiero.com")). toThrow("Invalid protocol"); expect(() => validateURL("http://estherpsicore..com")). toThrow("Invalid domain name"); expect(() => validateURL("http://book.warren-sanchez")). toThrow("Invalid path"); }); });  Type 📝    Semi-Otomatiki [x]  Safety 🛡️  Iyi refactoring yakachengeteka kana iwe ukatevera matanho nemazvo.  Kuedza chikamu chimwe nechimwe kunovimbisa kuti iwe unobata zvikanganiso nekukurumidza.  Sei Code iri Nani? ✨  Iyo refactored kodhi iri nani nekuti inovandudza kuverenga, kuchengetedza, uye testability.  Kuputsa regex kuita zvikamu zvidiki kunoita kuti kunzwisisa izvo chikamu chimwe nechimwe chiite nyore.  Iwe unogona zvakare kutaura zvikanganiso zvakati kana kusimbiswa kwatadza, izvo zvinobatsira vashandisi kugadzirisa zvavanoisa.  Uyu zvakare mukana wakanaka wekushandisa iyo   tekinoroji, zvishoma nezvishoma ichiwedzera kuoma nekuunza zvidimbu zvitsva. Test-Driven Development  Inovandudza Sei Kukurukurirana? 🗺️  Nekutyora regex kuita zvidiki, zvine musoro zvikamu, iwe unogadzira mepu iri padyo pakati pezvido   (semuenzaniso, "URL inofanirwa kuve neprotocol inoshanda") nekodhi. zveReal-World  Izvi zvinoderedza kusanzwisisika uye zvinoita kuti kodhi iratidze dambudziko redunhu nemazvo.  Kuganhurirwa ⚠️  Iyi nzira inogona kuwedzera imwe pamusoro kune yakapusa regex mapatani uko kuapwanya pasi kungave kusingakoshe.  Refactor neAI 🤖  Unogona kushandisa maturusi eAI kubatsira kuona regex zvikamu.  Bvunza iyo AI kuti itsanangure zvinoitwa nechikamu chega chega cheregex, yobva yakutungamira mukuityora kuita zvidimbu zvidiki zvinoyedzwa. Semuenzaniso, unogona kubvunza kuti, "Regex iyi inoitei?" uye wotevera, "Ndingaipatsanura sei kuita zvikamu zvidiki?".  Ndi2025, Hapana programmer anofanirwa kunyora nyowani   zvakare. Regular Expressions  Iwe unofanirwa kusiya iyi mechanic basa kuAI.  Kurudziro: 1. Ongorora regex kuti uone zvikamu zvayo zvine musoro.2. Kamura regex kuita diki, dzine mazita madiki-patterns pachikamu chimwe nechimwe.3. Nyora bvunzo dzeyuniti padiki-pattern kuti uone kuti inoshanda nemazvo.4. Sanganisa akaedzwa madiki-patterns mune yakazara yekusimbisa logic.5. Refactor iyo kodhi kuti ipe yakajeka mhosho meseji kune yega yega inotadza chikamu.  Pasina Mirayiridzo Yakakodzera  NeMirayiridzo Yakananga   ChatGPT   ChatGPT   Claude   Claude   Kuvhiringidzika   Kuvhiringidzika   Copilot   Copilot   Gemini   Gemini   DeepSeek   DeepSeek   Meta AI   Meta AI   Qwen   Qwen  Tags 🏷️  Testability  Level 🔋    Pakati [x]  Zvinoenderana Refactorings 🔄   https://hackernoon.com/improving-the-code-one-line-at-a-time?embedable=true   https://maximilianocontieri.com/refactoring-011-replace-comments-with-tests?embedable=true  Onawo 📚   https://hackernoon.com/ai-coding-tools-are-bad-news-for-lazy-programmers?embedable=true   https://regex101.com/?embedable=true   https://hackernoon.com/how-to-squeeze-test-driven-development-on-legacy-systems-rh113wcs?embedable=true  Credits 🙏  Mufananidzo    naGerd Altmann paPixabay  Ichi chinyorwa chikamu cheRefactoring Series.   https://maximilianocontieri.com/how-to-improve-your-code-with-easy-refactorings?embedable=true

The code in this story is for educational purposes. The readers are solely responsible for whatever they build with it.

Winner of Noonies 2020 for the award Hacker Noon Contributor of the Year - REFACTORING.

Refactoring 025 - Decompose Regular Expressions

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