Is it possible to determine if a scalar variable is an integer or a string?

In a shell script I am porting:

expr $VAR + 1;
if [ $? -ne 0 ]; then 
   do stuff...
fi

[download]

was used to check to see if the value of the variable was an integer.

Is there a similar way to do this in Perl?

Thanks

In reply to Integer Type Checking by HiFoo

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