Re: Filter out common object functions

[Inquie via Digitalmars-d-learn]

On Tuesday, 14 March 2017 at 19:43:59 UTC, Adam D. Ruppe wrote:

On Tuesday, 14 March 2017 at 19:39:26 UTC, Inquie wrote:

__traits(allMembers, T);


Try derivedMembers instead.


That doesn't work, unfortunately, probably because of the types 
I'm using(just returns object.


What I can do is this:

	enum isElementOfObject(alias T) = (staticIndexOf!(T, 
__traits(allMembers, Object)) < 0) ? true : false;
	enum isElementOfIDispatch(alias T) = (staticIndexOf!(T, 
__traits(allMembers, IDispatch)) < 0) ? true : false;	
	enum membersList = Filter!(isElementOfIDispatch, 
Filter!(isElementOfObject, __traits(derivedMembers, T)));



It would be nice if instead of having to make a large list of 
isElementOf, I could pass the types to the predicate:



enum isElementOf(alias S, alias T) = (staticIndexOf!(T, 
__traits(allMembers, S)) < 0) ? true : false;
	enum membersList = Filter!(isElementOf!Object, 
__traits(derivedMembers, T)));


and ultimately give a list of objects:


	enum membersList = Filter!(isElementOf!(Object, IDispatch), 
__traits(derivedMembers, T)));



Would be pretty cool if D could do that, but I doubt it can ;/ 
(not logically impossible, sort of like currying or something)

Re: Filter out common object functions

[Adam D. Ruppe via Digitalmars-d-learn]

On Tuesday, 14 March 2017 at 19:39:26 UTC, Inquie wrote:

__traits(allMembers, T);


Try derivedMembers instead.

Filter out common object functions

[Inquie via Digitalmars-d-learn]

I am iterating over the members of classes and interfaces and get 
things like hash, this, etc. These are causing problems in my 
code. I would like to get only the "specified" members.


While I can filter out

__traits(allMembers, T);

using Erase, it is tedius and error prone.

Is there a way to get only the immediate members? Non-inherited, 
and "common"(for a lack of a better word), this(), for example, 
is specified by the language... i don't need it, just functions 
the user specifies in the type.