Timeline for Piping operator in c++
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Feb 7, 2021 at 10:42 | vote | accept | SomeProgrammer | ||
| Feb 6, 2021 at 17:29 | comment | added | SomeProgrammer | Let us continue this discussion in chat. | |
| Feb 6, 2021 at 17:00 | comment | added | SomeProgrammer | No - constexpr doesn't really work (it would be up to the user to mark the lambda constexpr) - my piping operator just needs to do too many things at run-time to be constexpr. However, the compiler can do absolutely anything it wants as long as it does not have observable behaviour, so I think the "inline" just makes it a bit more transparent to the compiler | |
| Feb 6, 2021 at 16:54 | comment | added | Toby Speight |
OOh - perhaps it would make sense to add constexpr to the declaration? I'm not 100% sure about that, though - I'm just a beginner with constexpr. IIRC, the lambda can also be declared constexpr, but I'm really walking on thin ice now...
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| Feb 6, 2021 at 16:48 | comment | added | SomeProgrammer | yes it surprised me as well. In fact both versions of my code inlined the function, but the version with "inline" straight up calculated everything at compile - time, while the version without inline had to call the lambda. | |
| Feb 6, 2021 at 16:47 | comment | added | Toby Speight | It's worth searching the web for good articles on perfect forwarding and forwarding references. Another good search term is universal references, which is the older term for this construct. | |
| Feb 6, 2021 at 16:41 | comment | added | Toby Speight |
I'm surprised by that. If the inline is helpful, then continue using it. I don't think it can do any harm.
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| Feb 6, 2021 at 16:40 | comment | added | SomeProgrammer | Thank you for all your feedback and explaining perfect forwarding!! I had never quite understood it until now... About the "inline" keyword, the compiler (-O3) seemed to be better at optimising my code when the "inline" was there?? | |
| Feb 6, 2021 at 15:28 | history | answered | Toby Speight | CC BY-SA 4.0 |