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Roger Costello

I have been doing XML for many years. On my web site I have a lot of articles and tutorials that I've written on XML. Recently I have been immersed in learning Lambda Calculus and Combinators. Fascinating stuff!

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  • New Hampshire
  • xfront.com
  • Member for 6 years, 7 months
  • 30 profile views
  • Last seen Jan 1 at 12:26

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10 Clear, complete, proof that a language is Turing Compete? Sep 30 '13
5 Is $a^n b^n$ an artificial language or does it occur in the real world? Jan 3 '14
3 Is this an example of a type-0 grammar that is not context-sensitive? Sep 21 '13
3 Can a method be written if the language is undecidable? Sep 21 '13
2 Why does little endian apply to numbers and not to text strings? Jan 21 '19
0 Copy operation in under 9 states? Dec 25 '19

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