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Subject: Re: optional<T>, one more value or two states
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2013. janu=E1r 26., szombat 0:22:11 UTC+1 id=F5pontban Nicol Bolas a k=F6ve=
tkez=F5t=20
=EDrta:
>
> Yes: `optional<T*>` exists. Such an object has 3 possible states: the=20
> optional could be empty. The optional could contain a valid pointer. Or t=
he=20
> optional could contain *nullptr*.
>
>
I'd argue that this is still two state: empty, or a valid pointer. nullptr =
*is=20
*a valid pointer value, or to be more exact, T*(nullptr) is.

Regards, Robert

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<br><br>2013. janu=E1r 26., szombat 0:22:11 UTC+1 id=F5pontban Nicol Bolas =
a k=F6vetkez=F5t =EDrta:<blockquote class=3D"gmail_quote" style=3D"margin: =
0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;">Yes: `=
optional&lt;T*&gt;` exists. Such an object has 3 possible states: the optio=
nal could be empty. The optional could contain a valid pointer. Or the opti=
onal could contain <i>nullptr</i>.<br><div><br></div></blockquote><div><br>=
I'd argue that this is still two state: empty, or a valid pointer. <span st=
yle=3D"font-family: courier new,monospace;">nullptr</span> <b><i>is </i></b=
>a valid pointer value, or to be more exact, <span style=3D"font-family: co=
urier new,monospace;">T*(nullptr)</span> is.<br><br>Regards, Robert<br></di=
v>

<p></p>

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