Other than reading for a very long length (beyond the length that a file could ever be) what is the best way to read in a file. In my case the file could be anywhere upto around 1-5 meg big!
This works, but is obviously not great:-
sysopen(DF, "test.txt", O_RDONLY);
sysread DF, $rec, 26214400; #25meg
One further question, if that variable ($rec) has thousands of records which end in CR, what's the best way to split it up into an array (retaining the carriage returns)? ie: Anything better than simply doing this after the read?
$rec=''; # Release memory
Could it be cleverly combined into the read itself therefore meaning you don't have to use $rec and @array, and instead you could read it (ready split) straight into @array?
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||