From: Robert Feldt <robert.feldt@...>
Date: 2013-03-07T21:01:51+09:00
Subject: Re: Random#rand_inclusive?

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Thanks Matthew, didn't know that about 2.0.

Cheers,

Robert

On Thu, Mar 7, 2013 at 12:21 PM, Matthew Kerwin <matthew@kerwin.net.au>wrote:

> On 7 March 2013 17:55, Robert Feldt <robert.feldt@gmail.com> wrote:
>
>>
>> Random#rand and Kernel#rand are exclusive i.e. they return a value >= 0.0
>> but <max if max is a Float. What if one wants a rand that is inclusive of
>> the max?
>>
>
> I'm back at a computer now, and have looked up the docs for Random#rand.
> Apparently in 2.0 you can simply pass an inclusive range and it will do
> what you want, e.g.:  Random.rand(0.0..max)  <
> http://ruby-doc.org/core-2.0/Random.html#method-i-rand>
>
> However in 1.9, yeah, your rand_incl2 is basically what I'd do.  I
> independently came up with a simplified version:
> https://gist.github.com/phluid61/5107356
>



-- 
Best regards,

/Robert Feldt
--
Tech. Dr. (PhD), Assoc. Professor in Software Engineering
Chalmers, Software Engineering Dept
Blekinge Institute of Technology, Software Engineering Research Lab
robert.feldt (a) chalmers.se     or     robert.feldt (a) gmail.com
Mobile phone: +46 (0) 733 580 580
http://www.cse.chalmers.se/~feldt

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Thanks Matthew, didn&#39;t know that about 2.0.<div><br></div><div>Cheers,<=
/div><div><br></div><div>Robert<br><br><div class=3D"gmail_quote">On Thu, M=
ar 7, 2013 at 12:21 PM, Matthew Kerwin <span dir=3D"ltr">&lt;<a href=3D"mai=
lto:matthew@kerwin.net.au" target=3D"_blank">matthew@kerwin.net.au</a>&gt;<=
/span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_extra">=
<div class=3D"gmail_quote"><div class=3D"im">On 7 March 2013 17:55, Robert =
Feldt <span dir=3D"ltr">&lt;<a href=3D"mailto:robert.feldt@gmail.com" targe=
t=3D"_blank">robert.feldt@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex"><br><div dir=3D"ltr">Rand=
om#rand and Kernel#rand are exclusive i.e. they return a value &gt;=3D 0.0 =
but &lt;max if max is a Float. What if one wants a rand that is inclusive o=
f the max?</div>

</blockquote><div><br></div></div><div>I&#39;m back at a computer now, and =
have looked up the docs for Random#rand.=A0 Apparently in 2.0 you can simpl=
y pass an inclusive range and it will do what you want, e.g.:=A0 Random.ran=
d(0.0..max)=A0 &lt;<a href=3D"http://ruby-doc.org/core-2.0/Random.html#meth=
od-i-rand" target=3D"_blank">http://ruby-doc.org/core-2.0/Random.html#metho=
d-i-rand</a>&gt;<br>

<br></div><div>However in 1.9, yeah, your rand_incl2 is basically what I&#3=
9;d do.=A0 I independently came up with a simplified version: <a href=3D"ht=
tps://gist.github.com/phluid61/5107356" target=3D"_blank">https://gist.gith=
ub.com/phluid61/5107356</a><br>

</div></div>
</div></div>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>Best regards=
,<br><br>/Robert Feldt<br>--<br>Tech. Dr. (PhD), Assoc. Professor in Softwa=
re Engineering<br>Chalmers, Software Engineering Dept<br>Blekinge Institute=
 of Technology, Software Engineering Research Lab<br>
robert.feldt (a) <a href=3D"http://chalmers.se" target=3D"_blank">chalmers.=
se</a>=A0 =A0=A0 or=A0 =A0=A0 robert.feldt (a) <a href=3D"http://gmail.com"=
 target=3D"_blank">gmail.com</a><br>Mobile phone: +46 (0) 733 580 580<br><a=
 href=3D"http://www.cse.chalmers.se/~feldt" target=3D"_blank">http://www.cs=
e.chalmers.se/~feldt</a>
</div>

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