Jason, The Go Programming Language Specification is reference documentation. It is intended to be read very carefully in its entirety.
You are reading a specification dated Version of Aug 2, 2023. The current specification for Go 1.22 is dated as Modified Tue 06 Feb 2024 10:08:15 PM EST. The specification has always said that len(10) is not somehow defined: "invalid argument: 10 (untyped int constant) for len". Peter On Tuesday, February 6, 2024 at 8:41:38 PM UTC-5 Jason E. Aten wrote: > The release notes https://go.dev/doc/go1.22 refer to the spec here > > https://go.dev/ref/spec#For_range > > but I do not see any details about the new for i := range 10 statement > there. > > This is strange. Have the docs simply not been updated yet? > > But I do see this oddly out of place statement, where I'm not sure at all > what x is referring to in the earlier paragraphs. > > "The range expression x is evaluated once before beginning the loop, with > one exception: if at most one iteration variable is present and len(x) is > constant <https://go.dev/ref/spec#Length_and_capacity>, the range > expression is not evaluated." > > This would seem to say that, if x is the integer 10, as in the above > example, and if the len(10) is somehow defined (not sure it would be, but a > new reader might reasonably assume that an integer has constant length), > that the range expression would not be evaluated... which seems very odd. > I'm not sure what this sentence is talking about at all really. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/4a4017cd-a312-4129-b302-9ed68beef4c4n%40googlegroups.com.
