Function to check a number between a range in perl

[Aaryan123]

Function to check a number between a range in perl
=========================================

Back ground:
This situation has been fixed in Perl5.005. Use of .. in a for loop will iterate over the range, without creating the entire range.

    for my $i (5 .. 500_005) {
        push(@results, some_func($i));
    }

will not create a list of 500,000 integers.

Problem:
Here is the catch, think this 'Range iterator' is used only for integers. How about numbers bigger than integers

When I tried:

  for my $i (9845456557 .. 9845456559) {
  }

It is giving an error:
Range iterator outside integer range.

I can do it in the normal crude way, by having a 'for' loop but want to check whether any other function is there that supports my case.

Thankz in advance.

[KevinADC]

This is a limitation of the system perl is running on. I do not know what the work around is though. Maybe you can use Math::Bigint

[Aaryan123]

This is a limitation of the system perl is running on. I do not know what the work around is though. Maybe you can use Math::Bigint

Hello Kevin...

Thankz for the info.

Infact I could get the logic and fixed my code by using the 'for' loop

for (my $i =9845456557; $i <= 9845456559; $i++) {
}

But was wondering, what will be the difference between using the 'range iterator' and the 'for' loop. Is there any performance impact? Just curious to know!

[KevinADC]

I don't know if one method is more efficient than the other. My guess is that they are the same or nearly the same.

[Aaryan123]

I don't know if one method is more efficient than the other. My guess is that they are the same or nearly the same.

Thankz Kevin. Appreciate your time!