Every day we should hear at least one little song, read one good poem, see one exquisite picture, and, if possible, speak a few sensible words.” — Johann W. von Goethe


The cover photograph for mobile devices depicts Jurong East, Singapore, taken by chuttersnap. The cover photograph for desktop devices depicts One North, Singapore, taken by Adrien Olichon. The footer photograph depicts Fusionpolis, Singapore, taken by chuttersnap as well.

About 0a.io

0a.io is the blog of Archy Wilhes 魏何. Started in 2014. The current version is handcrafted in Haskell using Hakyll. Source code available on Github.

About Archy Wilhes

Wilhes, Archy Wilhes.    姓魏何,名家豪,字阿奇博爾德 (archy)

Communicator. System Architect. Functional Programmer. Product Designer. Art Person.

Co-founder & CTO of Castella.

22 years of age. With 10 years of experience in wiring up websites and apps.


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  1. I had formally reduced the Erdös-Szekeres conjecture into a constraint unsatisfiability problem [pdf on arxiv] && formulated a new proof for the Moessner’s theorem with double induction [pdf on arxiv] && completed a Ph.D. module in Programming Language Theory - all these when I was 19. And then I lost my virginity.

  2. I started coding and doing web-design at 12. I founded my first start-up at 16 (back in 2012, after dropping out from Catholic High School) and eight months later it died. I began freelancing & working for different start-ups since then.

  3. I speak English, Cantonese, and Mandarin fluently. Learning Japanese and German.

  4. And lastly, you can click here for a photo of me staring into your soul.

0a is handcrafted by Archy

Frontend consists of vanilla JS, CSS & HTML with Bootstrap
Backend written exclusively in Haskell using Hakyll

See you around.