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Groups > comp.lang.java.programmer > #35611

Re: Operators

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On 9/13/2016 10:51 PM, Roedy Green wrote:
> On Tue, 13 Sep 2016 17:47:57 -0700 (PDT), Lew <lewbloch@gmail.com>
> wrote:
>> https://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-3.12
>
> it says ? and : are both operators independently, contrary to net
> convention.  Obviously oracle is the authority.

In 3.12 they authoritatively says 2.

In 15.25 they authoritatively says 1.

:-)

Maybe they are not authoritatively the authority.

:-)

Or maybe there is a good explanation.

Chapter 3 is about lexical structure.

?: is definitely two lexical elements or tokens.

So:

"38 tokens, formed from ASCII characters, are the operators."

should possible be read:

"38 tokens [in the lexical scan], formed from ASCII characters, are
[used to create] the [37] operators"

In general one should be very careful about interpreting specs
like this.

But in this case it actually makes 3.12:
- consistent with 15.25
- consistent with common terminology

Arne

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Re: Operators Arne Vajhøj <arne@vajhoej.dk> - 2016-09-08 19:24 -0400
  Re: Operators Roedy Green <inquiry@mindprod.com> - 2016-09-12 22:13 -0700
  Re: Operators Lew <lewbloch@gmail.com> - 2016-09-13 17:47 -0700
    Re: Operators Arne Vajhøj <arne@vajhoej.dk> - 2016-09-13 22:15 -0400
    Re: Operators Arne Vajhøj <arne@vajhoej.dk> - 2016-09-13 22:18 -0400
    Re: Operators Roedy Green <inquiry@mindprod.com> - 2016-09-13 19:51 -0700
      Re: Operators Arne Vajhøj <arne@vajhoej.dk> - 2016-09-14 20:23 -0400

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