On Mon, 30 Sept 2024 at 02:47, Jeremy Rifkin via Std-Proposals <
std-proposals_at_[hidden]> wrote:

> Hi,
> I'm drafting a proposal to add std::arguments which would provide an
> encoding-friendly and modern interface for accessing program arguments.
> This is a follow-up for half of Izzy Muerte's paper P1275 Desert
> Sessions: Improving hostile environment interactions. A follow-up to the
> other half, std::environment, is being separately worked on.
>

C++ has been around for 40(?) years.
C has been around for longer than that.

In all that time, there has not been a single program that could not be
written because a programmer could not arbitrarily access command line
arguments from any old place in the program.

Is this really worth *standardising*?

Environment variables already provide a vector for injecting arbitrary data
into a program.

Might it not be a better idea to provide it as a compiler extension and see
if anyone actually uses it?

My suspicion is that anyone reviewing code that uses it will baulk at the
audacity of the idea.






>
> Draft:
> https://jeremy-rifkin.github.io/proposals/drafts/cpp/arguments-draft-1.html
> Very rough sketch to get a feel for the interface:
> https://godbolt.org/z/d7zvKc4xj
>
> The two main places I'm still weighing pros and cons on the design are
> whether the iterators for std::arguments_view should meet the
> requirements of Cpp17RandomAccessIterator, which would require backing
> storage for the `std::argument`s being iterated over, and what the
> behavior should be if the user modifies argv from main. While I think it
> would be desirable to not have changes to argv reflected in
> std::arguments, it would require copying arguments on startup which may
> be seen as undesirable even if opt-in. The rough implementation sketch I
> provided is a zero-overhead view over argv, with no allocation or
> caching of things like strlen computations on arguments.
>
> I'd very much appreciate comments, thoughts, and guidance.
>
> Cheers,
> Jeremy
>
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