Hi everybody, I have program which takes some value from a database (active directory, attribute UserAccountControl more info: http://msdn.microsoft.com/en-us/library/ms680832(v=vs.85).aspx) which contains many different things coded as a bitmask. Most common values are 512 for a 'normal' user and 514 for 'disabled' user. I need to know if this user account is active or disabled. I know this value is corresponds to a bit number two e.g. if the value matches 00000010 this account is disabled and in case it matches 00000000 this account is enabled. I followed some discussions here but still not sure how to do this kind of calculation in right way :-((

I managed to get right output using the & operator $bitmask_value & 2, see example code: 

use strict;
use warnings;

my @bitmask_value = ( 512, 514, 210, 328, 2, 1, 65535 );


foreach my $bitmask_value ( @bitmask_value ) {
    print 'bit 2 is ', $bitmask_value & 2 ? 'set' : 'not set', " for v
+alue [$bitmask]\n"; 
}

[download]
could you please tell me if there is some major problem or if I can trust this code? thank yo in advance

In reply to bitmask check by wwe

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.