No qualms at all, I'm trying to get some existing data
into a database, and I've got a lot of it. The file structure
is a bit odd, and I need to read in N lines of header,
then M lines of secondary data, before looping through
line by line for a while and then going back to the
I don't want to read it all into memory because
the file is about 160Mb with about 8 million lines. The
header is always a fixed number of lines, the secondary
data is optional but a fixed number of lines and the
bulk of the data is usually somewhere between 100 and
I was just surprised that this wasn't as easy / neat
to do as I expected. I'm quite pleased with my original
map one liner, but nobody has really commented on whether
it was really all that bad.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
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.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||