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Yes agreed,
Just found the bitwise functions, duh.
Still, I think that a flagset object could be handy (ill use it). You
add options (flags) that can be selected and deselected (32 max), you
can output those options as a query, turn option selections on and off;
output the entire combination of selections as single integer to be
stored wherever; check whether an option is selected or not, etc. Would
cut the need for an extra table in a database possibly.
Anyways, will get back
Well, I'll finish it tonight and see how nicely it works, post it 2mrw.
Snake wrote:
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You have the following functions.
BitAnd
BitOr
BitNot
BitXor
But don't forget you have a limited number of bits to use. Hal Helms mad
ethe mitake of using this approach to handle permissions in Extended
Fusebox, and it really didn't work.
If you need to have dozens of values, then a straight list or structure is
better.
--
Russ
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of dominic watson
Sent: 25 October 2005 17:32
To: Coldfusion Development
Subject: [CF-Dev] Bitwise operators
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There aren't any in CF are there? I am interested to know as I would like to
implement a system for setting flags for multiple options.
i.e. options are assigned flag values of 1,2,4,8,16,32,etc. Every possible
combination of selections would product a different integer result when
added together, thus you can have one field that stores all multiple
selections. All that is needed is methods to extract lists of flag values,
or check the presence of a flag, etc.
Anyone know of a UDF (couldnt see one on cflib), or CF function that does
this or should i write one?
Dominic
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