[julia-users] Why do I get a no method exception for type parameters ?

[Michael Francis]

A slightly simplified example, If I pin the type parameter I am unable to 
create the new object. I'm sure I'm missing something obvious here but 
given that Int 1 defaults to Int64 on my system I would expect both lines 
to work ? 

abstract Bar
type Foo{T} <: Bar
  t::T
  Foo() = new( zero( T ) )
end
Foo{T}( d::T) = ( this = Foo{T}() ; this.t = d; this )

Foo{Int}( 1)    # Foo{Int64} has no method matching Foo{Int64}(::Int64)
Foo( 1)         # Works