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digitalmars.D.learn - Filter out common object functions

reply Inquie <Inquie data1.com> writes:
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.
Mar 14
parent reply Adam D. Ruppe <destructionator gmail.com> writes:
On Tuesday, 14 March 2017 at 19:39:26 UTC, Inquie wrote:
 __traits(allMembers, T);
Try derivedMembers instead.
Mar 14
parent Inquie <Inquie data1.com> writes:
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)
Mar 14