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Re: String Deletion

  • To: mathgroup at smc.vnet.net
  • Subject: [mg121520] Re: String Deletion
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Sun, 18 Sep 2011 04:12:00 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • Reply-to: hanlonr at cox.net

list = List["Z:XBREG", "Z:XBREH", "Z:XBREI", "Z:ZZ6P", "Z:ZZ6Q", 
   "aye"];

Select[list, StringFreeQ[#, ":"] &]

{"aye"}

Cases[list, _?(StringFreeQ[#, ":"] &)]

{"aye"}

DeleteCases[list, _?(! StringFreeQ[#, ":"] &)]

{"aye"}


Bob Hanlon

---- Don <donabc at comcast.net> wrote: 

=============
Given a simple list of strings:

list =  List["Z:XBREG","Z:XBREH","Z:XBREI","Z:ZZ6P","Z:ZZ6Q","aye"]

how does one delete all the strings with a colon (:) anywhere in the string?

DeleteCases[list, ___:___]  looks very logical  and should work,
but of course it doesn't .

Also, there is a StringCases function which would seem
to correspond with the Cases function.  There is a
DeleteCases function but no string counterpart, namely,
DeleteString function.  Any reason for this?  

Thanks in advance.





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