Re^2: move down 2 lines in file?

[halley]

in reply to Re: move down 2 lines in file?
in thread move down 2 lines in file?

Changing $. does not move the file pointer. The only way to skip ahead without actually reading would be to use seek() which doesn't mix well with buffered variable-length line-oriented operations.

[Lawliet]

Oh, alright. I thought my idea was pretty cool though~

Can you (or anyone) confirm if the next if... method works?

[johngg]

Yes, you could do it like that:-

my $linesToSkip = 2;
while ( <FILE> )
{
    next if 0 < $linesToSkip --;
    # Do something here with the lines of interest.
    ...
}

I'd rather segregate the discarding of header lines (or whatever) from the processing of lines I'm interested in.

my $linesToSkip = 2;
my $discard = <FILE> for 1 .. $linesToSkip;
while ( <FILE> )
{
    # Do something here with the lines of interest.
    ...
}

I hope this is of interest.

Cheers,

JohnGG

Update: Fixed typo.