Re: Using Map with function that has options...

*To*: mathgroup at smc.vnet.net*Subject*: [mg68499] Re: Using Map with function that has options...*From*: Peter Pein <petsie at dordos.net>*Date*: Tue, 8 Aug 2006 06:28:34 -0400 (EDT)*References*: <eb6k2b$nkt$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Giacomo Ciani schrieb: > I have several expressions I whant to convert to string and then > concatenate togheter to create a message to be sent to the standard > output and written on a text log file. To avoid manually appliyng > ToString to each of them, I'm using something like: > > myMessage = StringJoin@@Map[ToString,{expr1,expr2,expr3,...,exprN}] > > The problem is that I would like to specify the option > "TraditionalForm" for ToString (without that, the exponents are written > on a different line compromising the formatting), but I can't > understand if using this tecnique I can do that, and how. > > Obviously I can solve the problem with an explicit loop over the > element of the array, but I was looking for a more elegant solution... > any idea? > > Thanks > > Giacomo > > P.S. expr are in general both strings or numeric values > Hi Giacomo, if you specify FormatType->TraditionalForm (or StandardForm), you get all these "\(", "\!" etc. in the resulting string. It doesn't look as nice as TraditionalForm, but InputForm gives you a simple string: In[1]:= StringJoin@@ Map[ToString[#,FormatType\[Rule]InputForm]&,{x^2,BesselJ[0,z^4/2]}] Out[1]= x^2BesselJ[0, z^4/2] In[2]:= %//FullForm Out[2]//FullForm= "x^2BesselJ[0, z^4/2]" hth Peter