From: Mark Campbell <nitrodist@...>
Date: 2012-04-14T05:55:50+09:00
Subject: Why doesn't Fixnum#to_d exist?

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http://stdlib.rubyonrails.org/libdoc/bigdecimal/rdoc/index.html

>  String#
>    to_d      ... to BigDecimal
>
>  Float#
>    to_d      ... to BigDecimal
>
>  Rational#
>    to_d      ... to BigDecimal

These all exist... why not for Fixnum#to_d? Right now I'm having to write a
mixin on Fixnum, something like this:

class Fixnum
  def  to_d
    BigDecimal(self.to_s)
  end
end

The above code is *very* similar to what has been written for Float and
String.

Is there a reason why this doesn't exist on Fixnum? I'm currently using
1.8.7.

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<div><a href=3D"http://stdlib.rubyonrails.org/libdoc/bigdecimal/rdoc/index.=
html">http://stdlib.rubyonrails.org/libdoc/bigdecimal/rdoc/index.html</a></=
div><div><br></div><div>&gt; =C2=A0String#</div><div>&gt; =C2=A0 =C2=A0to_d=
 =C2=A0 =C2=A0 =C2=A0... to BigDecimal</div>
<div>&gt;</div><div>&gt; =C2=A0Float#</div><div>&gt; =C2=A0 =C2=A0to_d =C2=
=A0 =C2=A0 =C2=A0... to BigDecimal</div><div>&gt;</div><div>&gt; =C2=A0Rati=
onal#</div><div>&gt; =C2=A0 =C2=A0to_d =C2=A0 =C2=A0 =C2=A0... to BigDecima=
l</div><div><br></div><div>These all exist... why not for Fixnum#to_d? Righ=
t now I&#39;m having to write a mixin on Fixnum, something like this:</div>
<div><br></div><div>class Fixnum</div><div>=C2=A0 def =C2=A0to_d</div><div>=
=C2=A0 =C2=A0 BigDecimal(self.to_s)</div><div>=C2=A0 end</div><div>end</div=
><div><br></div><div>The above code is *very* similar to what has been writ=
ten for Float and String.</div>
<div><br></div><div>Is there a reason why this doesn&#39;t exist on Fixnum?=
 I&#39;m currently using 1.8.7.</div>

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