Range documentation

[Manu]

I'd like to clarify some conflicts I've encountered.

TDPL talks about ranges, it mentions random access ranges requiring these
functions:

  T at(int i)
  Range slice(int x, int y)

But most code I encounter rather implements:

  T opIndex(size_t i)
  Range opSlice(size_t x, size_t y)

Which is it? Is there a distinction? One approach is deprecated?


Also, forward ranges require:

  Range save()

But there is also this function:

  Range opSlice()

With no args, handles the syntax 'range[]'. save() and opSlice() with no
args would appear to be identical.
Why have both? Which will be used in which cases?



On 24 March 2013 13:03, Manu <turkeyman at gmail.com> wrote:

> I'm trying to write some ranges with strictly controlled sets of features,
> but the docs on ranges are either very poor, or illusive (I can't find any).
>
> Suggest: Add a category under Language -> Language Reference about ranges,
> and all the stuff that defines their use/limitations. With some examples.
>
> I'm just copying from the std libs and hope I catch all the details.
>
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