On Sunday, 17 June 2018 at 02:25:59 UTC, Adam D. Ruppe wrote:
On Sunday, 17 June 2018 at 01:02:17 UTC, DigitalDesigns wrote:
If this was a sane language constraint then any identifiers starting with __ that were not reserved would at least give a warning but particularly give an error! Not fail silently and break code in ways that cannot be determined otherwise.

It is undefined behavior to use ANY identifier with __ leading. C works exactly the same way.

I'm sure there are naive C programmers who use "__" prefix for their own purposes.

Maybe it would be cleaner to create more special syntax for "internal" functions/methods, e.g require some kind of UDA in addition to the "__" prefix:

@Dinternal
void __someMethod() ...

Then disallow "__" prefix altogether (with the exception above).

Now, if someone still uses both the UDA and the prefix, he really cannot say he didn't know.

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