[erlang-questions] Function Dependency
Tue Aug 21 08:23:17 CEST 2012
Thanks for your answers, I tried using xref and it is working
perfectly, I am able to get both the local and remote functions which I am
calling from a specific function.
I need to extract the function body for the following reasons. I need to
transfer only the code that a function makes use of between nodes, nothing
more. Xref is giving me the signature of all those functions that I need.
Now, I want to use these signatures to extract the remaining body of the
Another short question, is there any way in which I can differentiate
whether a function comes from an Erlang release or not? Thus, if for
example I ask is_native(io_lib,format,2) - > true,
otherwise is_native(MyModule, MyFunction,0) -> false. I do not need to
transfer functions which are native to Erlang and which can be found on any
Thanks again for your help
On Tue, Aug 21, 2012 at 12:58 AM, Richard O'Keefe <> wrote:
> On 21/08/2012, at 9:48 AM, Justin Calleja wrote:
> > Here's one instance that comes to mind with regards to wanting part of a
> function definition (i.e. just some of it's clauses):
> > When implementing a gen_server you handle synchronous requests using
> handle_call/3. You might just want the implementation of handle_call/3
> which deals with certain messages.
> Yes, but that part
> - might be more than one clause
> - which need not be contiguous in the function
> - and some or all of them might be shared with the handling
> of other messages.
> It is possible to deliberately construct a function as a
> collection of clauses with small non-overlapping heads that
> simply redirect to other functions, so that it would make
> sense to extract part of _that_ function, and you would
> do so *not* by extracting the clause but by simply picking
> up the entire function that it delegates to.
> That doesn't mean it makes sense to extract part of a
> function that wasn't written to be treated that way.
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