Re: MemberQ
- To: mathgroup at smc.vnet.net
- Subject: [mg68538] Re: MemberQ
- From: dimmechan at yahoo.com
- Date: Wed, 9 Aug 2006 04:19:06 -0400 (EDT)
- References: <eb9pkt$t4j$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Î?/Î? Bruce Colletti ÎγÏ?αÏ?ε:
> 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
I face the same problem with you (both in version 5.1 and 5.2).
However, the strange thing is that using version 4.0 everything works
fine!!! I
ndeed,
In[1]:=
$Version
Out[2]=
"4.0 for Microsoft Windows (April 21, 1999)"
In[3]:=
lst=Range[0,1,0.1]
Out[3]=
{0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.}
In[4]:=
MemberQ[lst,0.7]
Out[4]=
True
In[5]:=
FreeQ[lst,0.7]
Out[5]=
False
Cheers,
Jim