fix #26419, be able to infer read(filename, String) (#28043)

JuliaLang · Jul 11, 2018 · 3dad306 · 3dad306
1 parent ab5fd17
commit 3dad306
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diff --git a/base/io.jl b/base/io.jl
@@ -289,6 +289,8 @@ Read the entire contents of a file as a string.
 """
 read(filename::AbstractString, args...) = open(io->read(io, args...), filename)
 
+read(filename::AbstractString, ::Type{T}) where {T} = open(io->read(io, T), filename)
+
 """
     read!(stream::IO, array::Union{Array, BitArray})
     read!(filename::AbstractString, array::Union{Array, BitArray})

diff --git a/test/read.jl b/test/read.jl
@@ -568,3 +568,6 @@ let p = Pipe()
     @test length(s) == 660_000 + typemax(UInt16)
     @test s[(end - typemax(UInt16)):end] == UInt16.(0:typemax(UInt16))
 end
+
+# issue #26419
+@test Base.return_types(read, (String, Type{String})) == Any[String]