Merge pull request #97 from nsajko/immutable

make BinomialIterState immutable
JuliaCollections · Dec 18, 2023 · 8f22a00 · 8f22a00
2 parents 0791c83 + c5ef5eb
commit 8f22a00
Showing 1 changed file with 2 additions and 4 deletions.
diff --git a/src/IterTools.jl b/src/IterTools.jl
@@ -548,7 +548,7 @@ IteratorEltype(::Type{Binomial{C}}) where {C} = IteratorEltype(C)
 
 subsets(xs, k) = Binomial(xs, length(xs), k)
 
-mutable struct BinomialIterState
+struct BinomialIterState
     idx::Vector{Int64}
     done::Bool
 end
@@ -573,9 +573,7 @@ function iterate(it::Binomial, state=BinomialIterState(collect(Int64, 1:it.k), i
         end
     end
 
-    state.done = i == 0
-
-    return set, state
+    return set, BinomialIterState(idx, i == 0)
 end