M4RKYU.SYSEdition 2027
Skip to content
LOCEN/Ontario · CA/▸topics · regexStandbyOK/--:--:--EST
M4M4RK_YUportfolio
  • BuildBuild
    BuildOverview
    • WorkSelected case studies and write-ups
    • GamesPlayable prototypes and game-dev logs
  • GalleryGallery
    GalleryOverview
    • PhotosPhoto collections and visual experiments
    • ShopPrints, posters, and one-off objects
  • WritingWriting
    WritingOverview
    • BlogLong-form devlogs and field notes
    • NotesShort observations, links, snippets
  • ResourcesResources
    ResourcesOverview
    • Tools38 in-browser developer utilities
    • LinksDaily-use dev and design bookmarks
  • AboutAbout
  • ContactContact
中文
regex
2-Colour · Riso Proof

Topic

Tagged “regex”

2 pieces

All topics
  • ResourceUtility
    Regex101Regex tester with named flavors, capture group inspector, and explanation pane. More patient than the JS-only tester on this site when the regex turns hairy.
  • ResourceTool
    Regex TesterLive pattern + flags against a sample buffer. Highlighted matches, capture groups inspector, error messages. The fastest way to know whether your regex actually matches what you think it does.
M4RKYUM4RKYUM4RKYUM4RKYUM4RKYUM4RKYUM4RKYUM4RKYU
Crafted since 2024
ZhenXiao Mark YuZhenXiao Mark Yu
get in touch

Saw something here?Tell me about it.

It's a portfolio, not a service · but I read every note — drop a line if anything here resonated, or just to say hi.

Start a conversation
open channel

say hi anytime · 2026

--:--:--ESTOntario, Canada
  • Email
  • GitHub
  • dev.to
  • LinkedIn
  • Twitter / X
  • Instagram
  • Facebook
  • YouTube
  • CodePen
  • Spotify
  • Snapchat

Newsletter

Get the occasional dispatch

Notes and logs from m4rkyu.com — short, dated, no noise. Unsubscribe anytime.

Work

Production builds, games, and visual archives.

  • Projects
  • Games
  • Archive
  • Logs

Resources

Daily-use tools and a personal link library.

  • Search
  • Latest
  • Tools
  • Links
  • Notes
  • Topics
  • Shop
RSSJSON feed

Studio

Background, contact, and channels for collaboration.

  • About
  • Contact
  • Changelog
  • Colophon
  • Resumepending

Socials

Find me on the usual feeds.

  • GitHub
  • dev.to
  • LinkedIn
  • Twitter / X
  • Instagram
  • Facebook
  • YouTube
  • CodePen
  • Spotify
  • Snapchat
  • Email
© 2026 ZhenXiao Mark Yumarkyu0615@gmail.com
  • Email
  • GitHub
  • dev.to
  • LinkedIn
  • Twitter / X
  • Instagram
  • Facebook
  • YouTube
  • CodePen
  • Spotify
  • Snapchat
PrivacyTermsBuilt with Next.js 16 · React 19 · Tailwind 4