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MathGroup Archive 2006

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Re: MemberQ

  • To: mathgroup at smc.vnet.net
  • Subject: [mg68556] Re: [mg68503] MemberQ
  • From: "Chris Chiasson" <chris at chiasson.name>
  • Date: Wed, 9 Aug 2006 04:20:36 -0400 (EDT)
  • References: <200608081028.GAA29635@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Even though the two entries are formatted as .7, the one generated by
the Range statement has already accumulated enough error to make it
fail MatchQ. You can see this with {Range[0., 1., .1], .7} // FullForm

On 8/8/06, Bruce Colletti <vze269bv at verizon.net> wrote:
> Re Mathematica 5.2.0.0.
>
> Since 0.7 is in the set {0.0, 0.1, 0.2,..., 0.9, 1.0}, why does MemberQ[Range[0., 1., .1], .7] return False?
>
> Thankx.
>
> Bruce
>
>


-- 
http://chris.chiasson.name/


  • References:
    • MemberQ
      • From: Bruce Colletti <vze269bv@verizon.net>
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