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Re: Map to nested list


in = {{1, 1/5}, {1, 1/5}};
Unprotect[IntegerQ];
SetAttributes[IntegerQ, Listable];
IntegerQ[#] & /@ in

-Francesco

athanase wrote:
> this expression
> 
> IntegerQ/@{1,1/5}
> 
> outputs {True, False}
> 
> which operator is used for nested list?
> 
> so 
> 
> IntegerQ ? {{1,1/5},{1,1/5}}
> 
> outputs {{True, False},{True, False}}
> 
> 
> thankyou :)
> 


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