Add a way to get the signature of a function

[emberian]

For example, racer signatureof fully::qualified::name might print fn(int) -> Box<String>. Would also want this to work on methods, ideally.

[phildawes]

I'm wondering how best to output this information from racer. I was
thinking an arg per output line (since function args themselves can include
commas (e.g. lambdas, generic args). Something like

% racer signatureof
RETURNS MyStruct<int,String>
ARG foo: int
ARG bar: Vec
ARG baz: |foo: int, bar: String|

Does that sound good to you?

Cheers,

Phil

On Wed, Aug 13, 2014 at 8:22 AM, Corey Richardson [email protected]
wrote:

For example, racer signatureof fully::qualified::name might print fn(int)
-> Box. Would also want this to work on methods, ideally.

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Reply to this email directly or view it on GitHub
#41.

[c-cube]

This would be very nice to have. A similar project (in OCaml) binds this feature to <Leader> t, and it is extremely useful in presence of type inference. Almost as useful as completion imho.

Another related feature (possibly more complicated) is to display the type of a selected expression (rather than symbol).

[llogiq]

What about where and generics?

Something like

BOUND 'a
BOUND T
RETURNS MyStruct<int,String> 
ARG foo: int 
ARG bar: Vec<String>
ARG baz: F
ARG frob: &'a T
WHERE F: FnOnce(&T) -> bool

perhaps?

[phildawes]

Sounds reasonable to me

[oblitum]

I'm seeing at the ReadMe that function signature is being shown. How is that happening? I don't have the same in Vim, any tip how to get it?

[oblitum]

I see completion from command line is indeed returning more data than just identifier, so I guess the vim plugin was not updated to mirror that but the emacs part was?