Make sure BlockedUnitRange returns an Integer (triggered when combined with InfiniteArrays) (#259)

Author: dlfivefifty

Project.toml

@@ -1,6 +1,6 @@
 name = "BlockArrays"
 uuid = "8e7c35d0-a365-5155-bbbb-fb81a777f24e"
-version = "0.16.27"
+version = "0.16.28"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"

src/blockaxis.jl

@@ -197,7 +197,8 @@ blocksizes(A,i) = blocklengths(axes(A,i))
 axes(b::BlockedUnitRange) = (_BlockedUnitRange(blocklasts(b) .- (first(b)-1)),)
 unsafe_indices(b::BlockedUnitRange) = axes(b)
 first(b::BlockedUnitRange) = b.first
-last(b::BlockedUnitRange) = isempty(blocklasts(b)) ? first(b)-1 : last(blocklasts(b))
+# ::Integer works around case where blocklasts might return different type
+last(b::BlockedUnitRange)::Integer = isempty(blocklasts(b)) ? first(b)-1 : last(blocklasts(b))
 
 function getindex(b::BlockedUnitRange, K::Block{1})
     k = Integer(K)