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    Does this answer your question? Is it good practice to rely on headers being included transitively?
    – Ben Cottrell
    Commented May 11 at 5:25
  • 1
    Does this answer your question? Is it good practice to rely on headers being included transitively?
    – Bart van Ingen Schenau
    Commented May 11 at 6:19
  • @BartvanIngenSchenau: did you notice that the other question (and its answers) does not say anything about sys-lib headers? All examples shown there are about project-immanent headers. I was considering to vote as a dupe, too, but I hesitated exactky because of this difference.
    – Doc Brown
    Commented May 11 at 6:38
  • @DocBrown, that difference is inconsequential.
    – Bart van Ingen Schenau
    Commented May 11 at 6:44
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    @BartvanIngenSchenau: there is a difference - headers from standard libs don't change (or at least very rarely), so the negative effect of transitive includes to build times will less matter than in the case of project-immanent headers. This might be irrelevant for this case, but I think it is not necessarily obvious for the asker that this is the case. That other question is related, of course, but Ben Cotrell's comment seems to be enough for my taste - I would not have close-voted this as a dupe.
    – Doc Brown
    Commented May 11 at 15:04