You were on the right track. Try this: 
   my $numbers="1 1.0 3.547 92.34 343.2234";

   while($numbers =~ /(^|[^.\d])(\d+)/g) {
     print "$2 is an integer\n";
   }

[download]
Which prints out: 
   1 is an integer
   1 is an integer
   3 is an integer
   92 is an integer
   343 is an integer

[download]
For the data you give,    /(^| )(\d+)/g    also works fine.
Sorry... no look-ahead.  %-(

In reply to Re: How can I match all the integers in a string? by dvergin
in thread How can I match all the integers in a string? by Anonymous Monk

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