Re: bug or feature ?
- To: mathgroup at smc.vnet.net
- Subject: [mg131285] Re: bug or feature ?
- From: Adriano Pascoletti <adriano.pascoletti at uniud.it>
- Date: Mon, 24 Jun 2013 03:58:48 -0400 (EDT)
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- Delivered-to: l-mathgroup@wolfram.com
- Delivered-to: mathgroup-outx@smc.vnet.net
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- References: <20130624025718.E40906A07@smc.vnet.net>
Add the option Heads->False (see documentation to Position, details and options) In[6]:= Position[{{1, 2}, {2, 3}, {1, 4}}, _?(EvenQ[#1[[2]]] & ), {1}, Heads -> False] Out[6]= {{1}, {3}} Adriano Pascoletti 2013/6/24 roby <roby.nowak at gmail.com> > Dear Group > > When trying to evaluate the following code the expected result is returned. > But strangly there is an error message generated. > The code should (and does) return the positions of all sublists with an > even element at the second position. > > > > Position[{{1, 2}, {2, 3}, {1, 4}}, _?(EvenQ[#[[2]]] &), {1}] > > Part::partd: Part specification List[[2]] is longer than depth of object. > >> > > {{1}, {3}} > > > > Any hints if this a bug or a feature ? > > Regards Robert > >
- References:
- Position[] bug or feature ?
- From: roby <roby.nowak@gmail.com>
- Position[] bug or feature ?