Re: Help with Delete cases
- To: mathgroup at smc.vnet.net
- Subject: [mg116256] Re: Help with Delete cases
- From: Chris Degnen <degnen at cwgsy.net>
- Date: Tue, 8 Feb 2011 05:08:09 -0500 (EST)
- References: <iiojml$gip$1@smc.vnet.net>
On Feb 7, 11:05 am, KenR <ramsey2... at msn.com> wrote: > I have a list= Range[3003] I want to delete cases of n = m(m+1) mod P > from the list, but Delete cases only deletes cases matching a pattern, > i.e. > > list = DeleteCases[list,Mod[N - m(m+1)/2,P] = 0] will definitely not > work. I want to keep list, as the same identifier, throughout since > this is within a looping process. Any suggestions? You can use something of this form: DeleteCases[Range[10], _?((# + 1)/2 == 4 &)] or use Select: Select[Range[10], (# + 1)/2 != 4 &]