deprecate union()

JuliaLang · Aug 5, 2017 · 5d6adbf · 5d6adbf
1 parent cb82e11
commit 5d6adbf
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diff --git a/base/deprecated.jl b/base/deprecated.jl
@@ -1334,6 +1334,8 @@ end
 
 @deprecate issubtype (<:)
 
+@deprecate union() Set()
+
 # 12807
 start(::Union{Process, ProcessChain}) = 1
 done(::Union{Process, ProcessChain}, i::Int) = (i == 3)

diff --git a/base/set.jl b/base/set.jl
@@ -65,7 +65,6 @@ done(s::Set, state) = done(s.dict, state)
 # NOTE: manually optimized to take advantage of Dict representation
 next(s::Set, i)     = (s.dict.keys[i], skip_deleted(s.dict, i+1))
 
-union() = Set()
 union(s::Set) = copy(s)
 function union(s::Set, sets::Set...)
     u = Set{join_eltype(s, sets...)}()

diff --git a/test/sets.jl b/test/sets.jl
@@ -138,7 +138,6 @@ for data_in in ((7,8,4,5),
 end
 
 # union
-@test isequal(union(),Set())
 @test isequal(union(Set([1])),Set([1]))
 s = ∪(Set([1,2]), Set([3,4]))
 @test isequal(s, Set([1,2,3,4]))