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Once we attempted to do a very similar thing (calculation with quantities, matrices, complex numbers, etc) but by extending javascript: http://engineerjs.com ht

• Cyph0n 10y ago
  That looks pretty cool! Is it still active? If not, what happened?
  • peterisza 10y ago
    No, we lost our motivation. We also wanted the libraries to be user editable like wiki, but never really finished that.
    • Cyph0n 10y ago
      That's too bad. I wish you the best of luck :)