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In general having slices of large structs is awkward because it means that when you range over the slice, you either have to write:
for i := range list {
x := &list[i]
...
}
or you write
for _, x := range list {
...
}
and put up with the fact that (1) the iteration is doing a (more expensive than pointer copy) struct copy for each element and (2) you cannot modify the elements by changing x, since x is a copy.
If list were a []*github.Issue it wouldn't have these problems.
The encoding/json package can handle slices of pointers just fine, but changing the types would have the drawback of breaking existing clients.
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