though personally I've never done this directly, as this is usually the job of a library that handles that particular data format.

Ah, yes, the luxuries of modern desktop computing. I grew up with Commodore computers (VIC20, C64, Amiga), and nowadays i sometimes work with Microcontrollers of the Arduino family. When you are low on memory (="always"), you tend to code as low level as possible.

Heck, for one of my projects i'm talking to the memory chips directly via I2C, because the corresponding library would require ~200(!!!!!) bytes of RAM. When you only got 2048 of those buggers in total, you tend to turn into Scrooge McDuck.

But even in some of my more recent data extraction projects i had to use random access for fixed size records.

PerlMonks XP is useless? Not anymore: XPD - Do more with your PerlMonks XP
Also check out my sisters artwork and my weekly webcomics

In reply to Re^2: What is the point of a+ and w+ when opening files? by cavac
in thread What is the point of a+ and w+ when opening files? by Maelstrom

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • 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:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, 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, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.