Hi,
I am using julia 0.3.8 + IJulia, and have been using ipython notebook for
sometime to perform my research activities. For my current project, I
define and export a number of types and methods wrapped in a module in one
of the cells, import the module, and refer explicitly to those types and
methods elsewhere in the notebook. I have found that redefining/reimporting
the module does not seem to work as expected (code excerpt only):
module mt
export ResultSet, start, next, done
type ResultSet
models::Array{Any}
sample_inds::Array{Int64}
failed::Array{Int64}
num_fails::Int64
end
start(x::ResultSet) = 1
next(x::ResultSet,i::Int64) = (x.models[i],i+1)
done(x::ResultSet,i::Int64) = (i == length(x.models)+1)
end
import mt;
It works the first time after kernel restart:
mt.start(HD1_HDvC_batch)
1
Later, after editing and rerunning the code:
# model_batch is a ResultSet object
state = mt.start(model_batch)
`start` has no method matching start(::ResultSet)
while loading In[10], in expression starting on line 7
Eventhough:
methods(mt.start)
1 method for generic function *start*:
- start(x::*ResultSet*) at In[9]:33
I have to restart the kernel basically every time I change any of the types or
their methods. This is currently just an annoyance, but when I start running
larger analyses in IJulia it will become prohibitive. I am aware of the issues
with redefining types in the main namespace of an active kernel REPL, the
workspace() function seems to be practically the same as a kernel restart, and
defining my types in a module in a cell doesn't seem to fix the resolution
issues. To my question:
Is there currently a best practice for using IJulia in this way when developing
with custom types? At least one that does not require a kernel restart every
time?
I'm still pretty new to julia, so if I am doing anything incorrectly here I'm
keen to learn. I'd love to use julia+IJulia exclusively for my work as I once
did for python, but it seems there are some of these issues that are presently
a barrier to doing that effectively. Does anyone have any suggestions?
Thanks.
