Re: When Is A High/Low-Level Language Not A High/Low-Level Language?

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Sujet : Re: When Is A High/Low-Level Language Not A High/Low-Level Language?
De : sgk (at) *nospam* REMOVEtroutmask.apl.washington.edu (Steven G. Kargl)
Groupes : comp.lang.c
Date : 17. Aug 2024, 04:40:23
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v9p2in$1ot42$1@dont-email.me>
References : 1
User-Agent : Pan/0.145 (Duplicitous mercenary valetism; d7e168a git.gnome.org/pan2)
On Fri, 16 Aug 2024 05:58:10 +0000, Lawrence D'Oliveiro wrote:

Here’s a little bit of Python code, from <https://gitlab.com/ldo/inotipy>:
 
    info_type = infoptr.contents.info_type
    infoptr = ct.cast \
      (
        infoptr,
        ct.POINTER
          (
            {
                FANOTIFY.EVENT_INFO_TYPE_FID : FANOTIFY.event_info_fid,
                FANOTIFY.EVENT_INFO_TYPE_DFID_NAME : FANOTIFY.event_info_fid,
                FANOTIFY.EVENT_INFO_TYPE_DFID : FANOTIFY.event_info_fid,
                FANOTIFY.EVENT_INFO_TYPE_PIDFD : FANOTIFY.event_info_pidfd,
                FANOTIFY.EVENT_INFO_TYPE_ERROR : FANOTIFY.event_info_error,
            }[info_type]
          )
      )
 
That’s a conditional cast, based on a common header field, to the
appropriate struct type for that data block.
 
That’s not just a switch-expression, it’s a switch-expression
returning a type.

Who cares?  So what?  What does this have to do with C?

--
steve

Date Sujet#  Auteur
16 Aug 24 * When Is A High/Low-Level Language Not A High/Low-Level Language?10Lawrence D'Oliveiro
17 Aug 24 +- Re: When Is A High/Low-Level Language Not A High/Low-Level Language?1Steven G. Kargl
17 Aug 24 +* Re: When Is A High/Low-Level Language Not A High/Low-Level Language?7Bart
18 Aug 24 i`* Re: When Is A High/Low-Level Language Not A High/Low-Level Language?6Lawrence D'Oliveiro
18 Aug 24 i `* Re: When Is A High/Low-Level Language Not A High/Low-Level Language?5Bart
18 Aug 24 i  `* Re: When Is A High/Low-Level Language Not A High/Low-Level Language?4Lawrence D'Oliveiro
18 Aug 24 i   `* Re: When Is A High/Low-Level Language Not A High/Low-Level Language?3Bart
18 Aug 24 i    `* Re: When Is A High/Low-Level Language Not A High/Low-Level Language?2Lawrence D'Oliveiro
18 Aug 24 i     `- Re: When Is A High/Low-Level Language Not A High/Low-Level Language?1Bart
20 Aug 24 `- Re: When Is A High/Low-Level Language Not A High/Low-Level Language?1Kenny McCormack

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