How about this ...

open( HANDLE, "list.txt" ) or die "Cannot open file - $!";
while( <HANDLE> ) {

    #   Process file line by line here 

}
close HANDLE;

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The while(<>) structure iterates through the magic ARGV handle, line by line, where each line is defined as ending by the input record separator, $/. In the example above, the filehandle, HANDLE is specified to be iterated through in this manner thereby performing the task of reading through a large file without storing it all in an array first.

 

perl -e 'print+unpack("N",pack("B32","00000000000000000000000111100011")),"\n"'

In reply to Re: How can I process large files with while(<>)? by rob_au
in thread How can I process large files with while(<>)? by Ritter

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