From: Robert Klemme <shortcutter@...>
Date: 2013-04-15T17:11:10+09:00
Subject: Re: simple lambda question

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On Mon, Apr 15, 2013 at 6:29 AM, Lee Daekeun <zmsquf99@gmail.com> wrote:

> Like this?
>
> 100.times.select{|a| a*a>1000}.map{|a| [a, (a*a).to_s]}.select{|a|
> a[1][0]==a[1][1] and a[1][2]==a[1][3]}
>

Or

irb(main):007:0> 100.times {|a| s = (a * a).to_s; puts a, s if
/\A(\d)\1(\d)\2/ =~ s}
88
7744
=> 100

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><br><div class=3D"gmail=
_quote">On Mon, Apr 15, 2013 at 6:29 AM, Lee Daekeun <span dir=3D"ltr">&lt;=
<a href=3D"mailto:zmsquf99@gmail.com" target=3D"_blank">zmsquf99@gmail.com<=
/a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p=
adding-left:1ex"><div dir=3D"ltr">Like this?<div><br></div><div>100.times.s=
elect{|a| a*a&gt;1000}.map{|a| [a, (a*a).to_s]}.select{|a| a[1][0]=3D=3Da[1=
][1] and a[1][2]=3D=3Da[1][3]}<br>
</div></div></blockquote><div><br></div><div style>Or</div><div style><br><=
/div><div>irb(main):007:0&gt; 100.times {|a| s =3D (a * a).to_s; puts a, s =
if /\A(\d)\1(\d)\2/ =3D~ s}</div><div>88</div><div>7744</div><div>=3D&gt; 1=
00</div>
<div style><br></div><div style>Cheers</div><div style><br></div><div style=
>robert</div></div><div><br></div>-- <br>remember.guy do |as, often| as.you=
_can - without end<br><a href=3D"http://blog.rubybestpractices.com/">http:/=
/blog.rubybestpractices.com/</a>
</div></div>

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