From: Magnus Holm <judofyr@...>
Date: 2013-09-15T13:22:29+02:00
Subject: [ruby-core:57216] Re: [ruby-trunk - Feature #8909] Expand "f" frozen suffix to literal arrays and hashes

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On Sun, Sep 15, 2013 at 1:01 PM, headius (Charles Nutter) <
headius@headius.com> wrote:

>
> Issue #8909 has been updated by headius (Charles Nutter).
>
>
> FWIW, I would still optimize frozen-arrays-of-literals to always return
> the same object, and frozen empty arrays and hashes would be the same
> object everywhere, but the expression nature of the array elements means
> this would be an unspecified characteristic of the feature.


So we can abuse this to cache a value?

  res = [expensive_call(123)]f
  p res[0]

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<div dir=3D"ltr">On Sun, Sep 15, 2013 at 1:01 PM, headius (Charles Nutter) =
<span dir=3D"ltr">&lt;<a href=3D"mailto:headius@headius.com" target=3D"_bla=
nk">headius@headius.com</a>&gt;</span> wrote:<br><div class=3D"gmail_extra"=
><div class=3D"gmail_quote">

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
Issue #8909 has been updated by headius (Charles Nutter).<br>
<br>
<br>
FWIW, I would still optimize frozen-arrays-of-literals to always return the=
 same object, and frozen empty arrays and hashes would be the same object e=
verywhere, but the expression nature of the array elements means this would=
 be an unspecified characteristic of the feature.</blockquote>

<div><br></div><div>So we can abuse this to cache a value?</div><div><br></=
div><div>=C2=A0 res =3D [expensive_call(123)]f</div><div>=C2=A0 p res[0]</d=
iv></div></div></div>

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