Most likely, you’ve imported or defined different versions of the type,
and/or you have an old definition laying around in the REPL session
somewhere. convert tries to convert an instance of the old version of the
type, and fails, because the convert is defined for a newer version. (You
can think of this as there existing two different types with the same name,
and the convert method you want is defined for the wrong one…)
Try restarting the REPL, and the problem will probably go away.
// T
On Tuesday, November 3, 2015 at 9:24:57 AM UTC+1, Lanting Guo wrote:
I want to convert a self defined type COSMIC.OrderedSampleMatrix to
> Array{ASCIIString,2}, but the repl displays a MethodError. But run in the
> script, everything is OK. I am confused about this.
>
>
> <https://lh3.googleusercontent.com/-DRB9dAVd0ao/Vjht-JvJZUI/AAAAAAAAAI8/nZ7coSTijyI/s1600/julia_user.jpg>
>
>
