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Re: How do I test if a bit has been set in a bitstring

by BrowserUk (Pope)
on Apr 25, 2013 at 02:58 UTC ( #1030561=note: print w/ replies, xml ) Need Help??


in reply to How do I test if a bit has been set in a bitstring

The ascii characters '1004' are not a "bitstring". They are the hex representation of an integer.

Try this:

#! perl -slw use strict; use constant FLAGS => { FLAG_DELETED => 0x0001, FLAG_DRAFT => 0x0002, FLAG_SEEN => 0x0004, FLAG_RECENT => 0x0008, FLAG_FLAGGED => 0x0010, FLAG_ANSWERED => 0x0020, FLAG_SAVED => 0x0040, FLAG_MDNSENT => 0x0080, FLAG_STTPENDING => 0x0100, FLAG_FAVOURITE => 0x0200, FLAG_NOTIFY => 0x0400, FLAG_STTPRESENT => 0x0800, FLAG_STTCOMPLETE => 0x1000, }; my( $text, $int ) = split '\.', <DATA>; chomp $int; $int = hex $int; printf "Flag '%s' (%u) %s set\n", $_, FLAGS->{ $_ }, $int & FLAGS->{ $_ } ? 'is' : 'is not' for keys %{ FLAGS() }; __DATA__ mymessage.1004

Outputs:

C:\test>1030559.pl Flag 'FLAG_RECENT' (8) is not set Flag 'FLAG_STTPRESENT' (2048) is not set Flag 'FLAG_STTPENDING' (256) is not set Flag 'FLAG_FAVOURITE' (512) is not set Flag 'FLAG_DELETED' (1) is not set Flag 'FLAG_NOTIFY' (1024) is not set Flag 'FLAG_DRAFT' (2) is not set Flag 'FLAG_FLAGGED' (16) is not set Flag 'FLAG_SEEN' (4) is set Flag 'FLAG_SAVED' (64) is not set Flag 'FLAG_ANSWERED' (32) is not set Flag 'FLAG_STTCOMPLETE' (4096) is set Flag 'FLAG_MDNSENT' (128) is not set

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