Re: Finds strings in a list that begin with "A"

*To*: mathgroup at smc.vnet.net*Subject*: [mg82333] Re: Finds strings in a list that begin with "A"*From*: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>*Date*: Thu, 18 Oct 2007 04:43:52 -0400 (EDT)*Organization*: The Open University, Milton Keynes, UK*References*: <ff4egn$d6p$1@smc.vnet.net>

tomfabtastic at hotmail.com wrote: > I am trying to look through a list of strings and return all strings > that start with an "A". > > For example, my list could be : > > {"And", "Bat", "Artistic", "Cob"} so I want to return {"And", > "Artistic"}. > > Any ideas ? One possible way of doing this is as follows. *StringCases* is applied in turn to each element of the list thanks to *Map* (shortcut /@) and check whether the current string start with a capital A followed by at least one more character (use triple dashes ___ if you want zero, one, or more characters). Also, you should look at the online documentation about *StringExpression* to get an overall idea of the possibilities. In[1]:= lst = {"And", "Bat", "Artistic", "Cob"}; In[2]:= StringCases[#, "A" ~~ __] & /@ lst // Flatten Out[2]= {"And", "Artistic"} Regards, -- Jean-Marc