13-Feb-2013 12:34, Marco Leise пишет:
Am Tue, 12 Feb 2013 13:38:53 +0100
schrieb Jacob Carlborg <[email protected]>:
I've compiled a list below of things used in Orbit (directly or
indirectly) that Phobos is lacking in. Please tell me if I'm wrong:
I can only tell you what of that list I would have had a use
for myself in the past:
* Configuration
Yes, native to the environment (e.g. use \AppData\Roaming on
Windows or .config on Linux)
* ConfigMap - Does not exist. An associative array with opDispatch
added to it. Allows to do things like:
auto config = ConfigMap();
config.foo = "asd";
config.bar.foo.baz = "foobar";
assert(config.foo == "asd");
I loaded an .INI template at CT (with default values and type
inference) and created nested structs from that. Was fun to do
in D. No matter what the implementation is, this is useful.
* std.process - I have not used it myself but I've heard it's not optimal
The biggest shortcoming is that you cannot do IPC with it, as
it doesn't give you two-way pipes to the child process. Again,
that's useful and IIRC was in the std.process replacement.
* std.getopt - Doesn't support the following:
* Required arguments
* Restricting the values of a given argument
* No way to automatically create a help/usage list out of the arguments
* Handling positional arguments
* No support for commands/action. That is "git commit", "commit"
would be the command/action
* Handle multiple command lines
* Validation of the arguments
All of that except "action" and "multiple command lines".
Validation is probably too complex to include at the spot. I
mean, sometimes you need to validate the combination of all
options, so you can just as well write a separate function.
CTFE:
I think most of that exists in Phobos or can be constructed in
one line of code:
* format - A simple formatting function
http://dlang.org/phobos/std_metastrings.html#.Format
This should never see the light of day. Use plain format from std.string
it works with CTFE and many, many times faster.
In fact the whole metastrings should be obliterated.
--
Dmitry Olshansky
