[julia-users] membership checking in heap

[Athul George Appadan]

I am trying to find a way to check the membership of a user defined type 
object in a heap. This is the code I have written:

type HeapEntry
    k::Int
    dist::Float64
end

isless(e1::HeapEntry, e2::HeapEntry) = e1.dist < e2.dist

heap1 = []
Collection.heappush!(heap1, HeapEntry(1, 10.0))


But HeapEntry(1, 10.0) is returning false. Can anyone explain how to do it 
correctly?