Re: Apache Portable Runtime
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- Subject: Re: Apache Portable Runtime
- From: Mike Pall <mikelu-0703@...>
- Date: 2007年3月14日 01:23:42 +0100
Hi,
Peter Odding wrote:
> My current implementation,
> apr.stat(path, what), has two modes: if just one property is requested,
> this is the property returned. More than one property means a table is
> returned.
May I suggest a different API, giving you the best of both worlds:
-- No property given: return table with all (named) properties.
local st = apr.stat(path)
print(st.size, st.mtime, ...)
-- Individual properties given: use multiple return values.
local size, mtime = apr.stat(path, "size", "mtime")
if size > 0 and mtime ~= prev_mtime then ... end
if apr.stat(path, "type") == "directory" then ... end
> *Microseconds*
> JG> i like fractional seconds. i.e. 1.0 = 1 sec, 0.001 = 1msec,
> 0.000001 = 1usec
> AQ> Use fractional seconds.
> RL> I like seconds.
>
> Good, my preference as well. Thank you all!
Well, Lua can be compiled with an integer number type, e.g. for
embedded platforms. Sub-second timing seems relevant for embedded
platforms (except for the file APIs maybe).
So you might want to return two numbers (seconds, microseconds)
or a table or a userdata type in this case. But of course this
will break portability with Lua installations using doubles or
floats.
I don't see a clean solution. Maybe apply YAGNI and wait until
someone complains (and let'em explain what they really need).
Bye,
Mike