This was well written and informative, but I think I still see a bug in this code. After closing the file and opening it for read/write access but before putting the exclusive lock on it, someone else could swoop in and read the file...which would be minus your current entry, as it hasn't been added yet. After adding your entry, the previous persons then add theirs, minus yours. So the file is corrupted. Two alternatives: Append to the file instead of clearing it out OR open it for read/write from the very beginning with exclusive control. Thoughts?
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|