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| From | Terry Reedy <tjreedy@udel.edu> |
| Subject | Re: Is Python programming language? |
| Date | Sat, 09 Feb 2013 21:40:11 -0500 |
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On 2/9/2013 6:53 PM, Michael Torrie wrote: > On 02/09/2013 04:26 PM, Tim Roberts wrote: >> Most people would call bash a "scripting language", but it is also clearly >> a programming language. It has syntax, variables and expressions. I >> suspect it is Turing-complete, although I haven't seen a proof of that. >> >> I would assert that scripting languages are a proper subset of programming >> languages, not a separate category. > > I'm pretty sure Bash is turing complete. I know it's been shown that > sed is turing complete, and awk probably is too! If I recall, the way > to show a language is turing complete is to implement a turing machine If the language has arrays, conditional execution, and explicit (while) loops or recursion, you can be pretty sure it is Turing complete. I presume this covers awk and bash. Something like the game of Life, where the looping in implicit in the operation, is much harder to show Turing complete. I suspect sed is non-trivial also. -- Terry Jan Reedy
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Re: Is Python programming language? Stephane Wirtel <stephane@wirtel.be> - 2013-02-08 14:15 +0100
Re: Is Python programming language? Grant Edwards <invalid@invalid.invalid> - 2013-02-08 17:59 +0000
Re: Is Python programming language? Tim Roberts <timr@probo.com> - 2013-02-09 15:26 -0800
Re: Is Python programming language? Michael Torrie <torriem@gmail.com> - 2013-02-09 16:53 -0700
Re: Is Python programming language? Terry Reedy <tjreedy@udel.edu> - 2013-02-09 21:40 -0500
Re: Is Python programming language? Terry Reedy <tjreedy@udel.edu> - 2013-02-09 21:47 -0500
Re: Is Python programming language? Michael Torrie <torriem@gmail.com> - 2013-02-09 19:55 -0700
Re: Is Python programming language? Dan Stromberg <drsalists@gmail.com> - 2013-02-11 15:46 -0800
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