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Re: The joy of FORTRAN

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On Sun, 29 Sep 2024 11:23:18 +0200, R Daneel Olivaw wrote:

> Kerr-Mudd, John wrote:
>> On 28 Sep 2024 09:41:59 GMT Bob Eager <news0009@eager.cx> wrote:
>> 
>>> On Sat, 28 Sep 2024 09:33:23 +0100, Kerr-Mudd, John wrote:
>>>
>>>> I was too lazy to dig into my rusty brain to code the equivalent in
>>>> Rexx,
>>>> I was hoping someone here would do it!
>>>>
>>>>>>>>       for item in "the,quick,brown,fox".split(",") :
>>>>>>>>           print(item)
>>>>>>>>       #end for
>>>>
>>>> OK,OK. Cribbed & hacked from a stackoverflow answer:
>>>> https://stackoverflow.com/questions/15437494/rexx-parse-a-csv-line-
>>> separator
>>>>
>>>>
>>>> myline="the,quick,brown,fox"
>>>>
>>>> do i = 1 by 1 while myline <> ''
>>>>      parse var myline w.i ',' myline
>>>> end w.0 = i-1
>>>>
>>>> do i = 1 to w.0
>>>>      say w.i
>>>> end
>>>>
>>>>
>>>> Hmm, must be a shorter way without the bother of setting up the stem
>>>> array.
>>>
>>> If you use space as a delimiter, which I would argue is more natural:
>>>
>>> ------------------------------------------
>>> myline="the quick brown fox"
>>>
>>> do i = 1 to words(myline)
>>>     say word(myline, i)
>>> end ------------------------------------------
>>>
>>>
>> Thanks; It's been yea^w decades since I used Rexx. And even then not
>> extensively. But Rexx has "Parse" which few(no?) other languages have.
>> 
>> 
> What does "parse" do?
> I just had a look at some REXX documentation but it was not particularly
> helpful, it looked to me to be something which a couple of FORTRAN 77
> function calls would have handled perfectly adequately.

It essentially splits a string into substrings, using specified 
delimiters. The source string may be from a variety of places (variable, 
argument array, input line, stack) and there are some weird special cases 
such as getting the version number.

Essentially, you specify a template and it splits the string in accordance 
with that. For example:

  parse var s1 "," s2 "-" s3




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Re: The joy of FORTRAN "Kerr-Mudd, John" <admin@127.0.0.1> - 2024-09-28 09:33 +0100
  Re: The joy of FORTRAN Bob Eager <news0009@eager.cx> - 2024-09-28 09:41 +0000
    Re: The joy of FORTRAN "Kerr-Mudd, John" <admin@127.0.0.1> - 2024-09-29 09:19 +0100
      Re: The joy of FORTRAN R Daneel Olivaw <Danny@hyperspace.vogon.gov> - 2024-09-29 11:23 +0200
        Re: The joy of FORTRAN Bob Eager <news0009@eager.cx> - 2024-09-29 10:18 +0000
          Re: The joy of FORTRAN R Daneel Olivaw <Danny@hyperspace.vogon.gov> - 2024-09-29 16:47 +0200
        Re: The joy of FORTRAN Peter Flass <peter_flass@yahoo.com> - 2024-09-29 13:15 -0700
      Re: The joy of FORTRAN Bob Eager <news0009@eager.cx> - 2024-09-29 10:10 +0000
      Re: The joy of FORTRAN Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-09-29 23:37 +0000
  Re: The joy of FORTRAN lar3ryca <larry@invalid.ca> - 2024-10-08 19:53 -0600
    Re: The joy of Python Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-10-09 05:46 +0000
      Re: The joy of Python p.dean@invalid.net (Peter Dean) - 2024-10-09 07:12 +0000
        Re: The joy of Python "Kerr-Mudd, John" <admin@127.0.0.1> - 2024-10-09 09:27 +0100
          Re: The joy of Python lar3ryca <larry@invalid.ca> - 2024-10-09 21:42 -0600
            Re: The joy of Python p.dean@invalid.net (Peter Dean) - 2024-10-10 04:39 +0000

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