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Re: how to take quotation marks away ?


Here's one way...

{{"42.1,3.3"}, {"3.1,4.2"}}
TableForm[%]

(Flatten[ToExpression[(StringJoin["{", #1, "}"] & ) /@ #1]] & ) /@ %

TableForm[%]

"Florian Jaccard" <florian.jaccard at eiaj.ch> wrote in message news:<c9k3op$fe7$1 at smc.vnet.net>...
 
> I have a  (long)  list of the form   {{"42.1,3.3"},{"3.1,4.2"}}  
> 
> How can I transform it to obtain  {{42.1,3.3},{3.1,4.2}} ?
> 
> I tried ToExpression, but it failed.
>


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