On Tue, 23 Apr 2024 14:07:05 +0000, Schmitt, Michael wrote:
>You lost me when you say that rather than embrace the conventions, standards,
>and features of the language I'm coding in (REXX), I should restrict it to the
>limitations of other languages.
>
Did I say that? I was trying to take a middle ground.
>The maxim is to assume that readers of your code are familiar with the
>language you're coding in, and would expect your code to follow those
>conventions. It would /defy/ their expectations to code otherwise.
>
Be sparse and elegant but not rococo. I prefer:
'A' B
to (the equivalent):
'A ' || B
The latter seems to cater to the expectations of PL/I or some other language.
But I confess to an obsession with performance. Function call/return is
costly, so I'll use:
PARSE VAR A . . X .
rather than (the sparser?):
X = SUBWORD( A, 3 )
>-----Original Message-----
>From: Paul Gilmartin
>Sent: Monday, April 22, 2024 8:56 PM
>To: [email protected]
>
>On Tue, 23 Apr 2024 10:59:47 +1000, Andrew Rowley wrote:
>> ...
>>To me, it is much clearer to be explicit, including the concatenation, e.g.
>>"DELETE " || foo
>>seems much clearer about exactly what is happening/expected, which are
>>variables and which are (expected to be) constant etc.
>>
>That overkill is apt to confuse a POSIX shell partisan who would
>see the blank as part of the command name and expect a
>failure such as:
> 813 $ 'rm ' foo
> -bash: rm : command not found
> 814 $
>
>The maxim is assume your readers have a moderate, not
>advanced, knowledge of the language and make little
>concession to conventions of other languages. Don't:
> 'DELETE' || ' ' || value( 'foo' )
>
>My stumbling block learning Shell was excessive familiarity
>with CMS, where command strings built by Rexx are parsed
>again by SVC 202. I tried to build command strings with sh
>to pass to a nonexistent subsequent parser. I got better in
>a couple days.
--
gil
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