Capture returned string from show

[henry2004y]

Hi,

I want to capture the returned string from a dispatched show function on my customized type, but somehow it always returns an empty string:

struct MyType
end

a = MyType()

Base.show(io::IO, ::MyType) = println("hello")

b = repr(a) # b == ""

What should be the right way to this?

[sijo]

@henry2004y

println("hello")

This should be println(io, "hello").