bitfields - Default values?
Era Scarecrow
rtcvb32 at yahoo.com
Tue Jun 12 04:05:56 PDT 2012
On Tuesday, 5 June 2012 at 00:17:08 UTC, bearophile wrote:
> Era Scarecrow:
>> The documentation for bitfields doesn't go into detail if you
>> can put any default values into it. Can you?
>
> I think you can't. See:
> http://d.puremagic.com/issues/show_bug.cgi?id=4425
>
> Bye,
> bearophile
K, I think I have a fix for this done. Now if I bother to get
GitHub to work with me at all...
Here's a sample, thoughts of naming or other changes before I
try and add this back in? (I'm not the best with naming things)
//T is a array of strings of name=value.
//returns a replacement string from bitfields with the defaults
in place
string bitfields_D(string bitf, T...)();
struct defs {
mixin(bitfields_D!(
bitfields!( //borrowed from std.bitmanip
bool, "b", 1,
uint, "i", 3,
short, "s", 4),
"i=2",
"s=5"));
}
defs s;
assert(!s.b);
assert(s.i == 2);
assert(s.s == 5);
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