Merge pull request #18727 from ninjin/nin/setconv

RFC: Set to Set conversions
JuliaLang · Sep 30, 2016 · 862fb74 · 862fb74
2 parents f935a50 + 3cf83c3
commit 862fb74
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diff --git a/base/set.jl b/base/set.jl
@@ -193,3 +193,6 @@ function hash(s::Set, h::UInt)
     end
     return h
 end
+
+convert{T}(::Type{Set{T}}, s::Set{T}) = s
+convert{T,S}(::Type{Set{T}}, x::Set{S}) = Set{T}(x)
diff --git a/test/sets.jl b/test/sets.jl
@@ -252,3 +252,19 @@ end
 @test pop!(Set(1:2), 2, nothing) == 2
 
 @test length(Set(['x',120])) == 2
+
+# convert
+let
+    iset = Set([17, 4711])
+    cfset = convert(Set{Float64}, iset)
+    @test typeof(cfset) == Set{Float64}
+    @test cfset == iset
+    fset = Set([17.0, 4711.0])
+    ciset = convert(Set{Int}, fset)
+    @test typeof(ciset) == Set{Int}
+    @test ciset == fset
+    ssset = Set(split("foo bar"))
+    cssset = convert(Set{String}, ssset)
+    @test typeof(cssset) == Set{String}
+    @test cssset == Set(["foo", "bar"])
+end