Re: bug or feature ?
- To: mathgroup at smc.vnet.net
- Subject: [mg131282] Re: bug or feature ?
- From: Sseziwa Mukasa <mukasa at gmail.com>
- Date: Mon, 24 Jun 2013 03:57:47 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- Delivered-to: l-mathgroup@wolfram.com
- Delivered-to: mathgroup-outx@smc.vnet.net
- Delivered-to: mathgroup-newsendx@smc.vnet.net
- References: <20130624025718.E40906A07@smc.vnet.net>
Position checks the heads of expressions too, try (Debug) In[7]:= Position[{{1, 2}, {2, 3}, {1, 4}}, _?(EvenQ[#[[2]]] &), {1}, Heads -> False] (Debug) Out[7]= {{1}, {3}} On Sun, Jun 23, 2013 at 10:57 PM, roby <roby.nowak at gmail.com> wrote: > 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 ?