add similar() method for EnvHash. fixes #4643

JuliaLang · Oct 26, 2013 · 763cd61 · 763cd61
1 parent 7173fe8
commit 763cd61
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/base/env.jl b/base/env.jl
@@ -70,6 +70,8 @@ end
 end
 const ENV = EnvHash()
 
+similar(::EnvHash) = Dict{ByteString,ByteString}()
+
 getindex(::EnvHash, k::String) = @accessEnv k throw(KeyError(k))
 get(::EnvHash, k::String, def) = @accessEnv k (return def)
 in(k::String, ::KeyIterator{EnvHash}) = _hasenv(k)