[haiku-development] Re: c++ struct assignment like in c?
- From: Alex Wilson <yourpalal2@xxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sun, 27 Mar 2011 10:45:38 -0600
On Sun, Mar 27, 2011 at 4:06 AM, Clemens <clemens.zeidler@xxxxxxxxxxxxxx>wrote:
> Hi,
>
> just try to make the ps2 bus manager c++. Is there something in c++ similar
> to:
>
> ps2_dev ps2_device[PS2_DEVICE_COUNT] = {
> {
> .name = "input/mouse/ps2/0",
> .active = false,
> .idx = 0,
> .result_sem = -1,
> .command = standard_command_timeout
> }
> };
>
You should be able to do something like this:
ps2_dev ps2_device[PS2_DEVICE_COUNT] = {
ps2DevBuilder("input/mouse/ps2/0")
.active(false)
.idx(0)
.result_sem(-1)
.command(standard_command_timeout)
,
ps2DevBuilder()
//... etc.
}
Just have the ps2DevBuilder methods return a reference to 'this', and
provide an 'operator ps2_dev()' method. This also allows you to have
defaults for all your values. This is called the 'Named Parameter Idiom' and
you can read about it here:
http://www.parashift.com/c++-faq-lite/ctors.html#faq-10.20 Hope that helps
:)
--Alex
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