Re^2: Its a pretty simple question.. though embarassed to ask but i am totally new in perl

where to use next; because its going in infinite loop .. how should i use next statement fr bth d files !

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Re^3: Its a pretty simple question.. though embarassed to ask but i am totally new in perl by Laurent_R (Canon) on Aug 13, 2013 at 16:48 UTC
The suggestion was to use next to skip the header line if either you recognize it as a header (for example with a regex), or you know that it is the first line of the file because the $. special variable (line number in the last read file) is equal to 1, something like this: `next if $. == 1;` In my example program, I used a third solution: to read (and discard) one line of input of each file before entering into the while loop. This is slightly faster when reading huge files, since it removes a test from the inner loop, but the difference is probably pretty small.	[reply] [d/l]

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Re^3: Its a pretty simple question.. though embarassed to ask but i am totally new in perl
by Laurent_R (Canon) on Aug 13, 2013 at 16:48 UTC

The suggestion was to use next to skip the header line if either you recognize it as a header (for example with a regex), or you know that it is the first line of the file because the $. special variable (line number in the last read file) is equal to 1, something like this:

next if $. == 1;

In my example program, I used a third solution: to read (and discard) one line of input of each file before entering into the while loop. This is slightly faster when reading huge files, since it removes a test from the inner loop, but the difference is probably pretty small.

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