During using the eachoverlap function in GenomicFeatures,I cannot know how to solve this problem.

My problem is :if each interval in “*col*” contains any interval in “*hhh*” ,I will output interval "*col* ".Here is the picture(below). For example *col*’s **10628-10683** contains **10631** in *hhh*,I will output the first line in *col*.Next **10643-10779** in *col* contains *hhh*’s **10648** .If *col*’s interval does not contain any *hhh*’s interval,we will discard this *col*’s line.

I typed in this code.and cannot solve it.

```
eachoverlap(col,hhh,isless)
```

And I also tried isoverlappiing,unfortunately it was slow.

```
k=IntervalCollection{String}()
for a in col ,b in hhh
if isoverlapping(a,b)
if (a in k)==false
push!(k,a)
end
end
end
```

So would you please tell me how I can handle this issue?I will be grateful to you.