Re: [boost] [gsoc] Boost.Process done

Subject: Re: [boost] [gsoc] Boost.Process done
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2010-09-05 21:07:26

Boris Schaeling wrote:
>
> * The delegates in the context class expect this signature:
> std::pair<handle, handle> (bool). There is a parameter of
> type bool passed to indicate whether an input or an output
> stream is configured. Now it's not required anymore to pass a
> parameter like input_stream or output_stream yourself.

Why is true input and false ouput (or the reverse)?  Use an enumerated type for clarity.

> * this signature: std::pair<handle, handle> (bool). Shall we
> use std::pair<handle, handle> to return two handles for the
> child and parent process or a struct with member variables
> called parent_end and child_end?

A child naturally ensues from a parent, so the order parent then child is easily remembered, though there is no harm in creating a struct that makes the members explicit.

> Shall we use a bool to indicate whether an input or output
> stream is configured or something else like an enumeration? I
> think it all depends on how many developers want to define
> new stream behaviors and if it's worth to make the signature
> a bit more self-explanatory?

bool is never a good idea for such arguments, regardless of the possibility of extending the set.

___
Rob Stewart                           robert.stewart_at_[hidden]
Software Engineer, Core Software      using std::disclaimer;
Susquehanna International Group, LLP  http://www.sig.com

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