Add Vector{T}() and Vector() constructors

JuliaLang · May 6, 2015 · 7bd605a · 7bd605a
1 parent 90f7cd0
commit 7bd605a
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/base/array.jl b/base/array.jl
@@ -15,7 +15,8 @@ typealias StridedVector{T,A<:DenseArray,I<:Tuple{Vararg{RangeIndex}}}  Union(Den
 typealias StridedMatrix{T,A<:DenseArray,I<:Tuple{Vararg{RangeIndex}}}  Union(DenseArray{T,2}, SubArray{T,2,A,I})
 typealias StridedVecOrMat{T} Union(StridedVector{T}, StridedMatrix{T})
 
-call{T}(::Type{Vector{T}}, m::Integer) = Array{T}(m)
+call{T}(::Type{Vector{T}}, m::Integer=0) = Array{T}(m)
+call(::Type{Vector}, m::Integer=0) = Array{Any}(m)
 call{T}(::Type{Matrix{T}}, m::Integer, n::Integer) = Array{T}(m, n)
 
 ## Basic functions ##

diff --git a/test/arrayops.jl b/test/arrayops.jl
@@ -122,6 +122,14 @@ ind = findin(a, b)
 rt = Base.return_types(setindex!, Tuple{Array{Int32, 3}, UInt8, Vector{Int}, Float64, UnitRange{Int}})
 @test length(rt) == 1 && rt[1] == Array{Int32, 3}
 
+# construction
+@test typeof(Vector{Int}()) == Vector{Int}
+@test typeof(Vector()) == Vector{Any}
+@test Vector() == []
+@test length(Vector{Int}(3)) == 3
+@test length(Vector(3)) == 3
+@test size(Matrix{Int}(2,3)) == (2,3)
+
 # get
 let
     A = reshape(1:24, 3, 8)