I wrote this when I wanted to cache the results of matread. Your problem
sounds like it could be similar.
let matread_cache = (String => Any)[]
global caching_matread
function caching_matread(filename)
if !haskey(matread_cache, filename)
matread_cache[filename] = matread(filename)
end
return matread_cache[filename]
end
end
Den torsdagen den 9:e oktober 2014 kl. 10:08:23 UTC+2 skrev
cormu...@mac.com:
>
> A beginner's question...
>
> I'm writing a function that wants to load a set of data from a file,
> depending on an argument passed to the function (so a different argument
> requires a different set of data to be loaded). I'd like each set of data
> to be stored somehow in separate variables so that when the function is
> called again with the same argument, it doesn't have to load that
> particular data again (because it takes 5 seconds to load).
>
> I'm not sure whether this requires the use of global variables? I looked
> through the documents (
> http://julia.readthedocs.org/en/latest/search/?q=global) but didn't gain
> enlightenment. :)
>
> I think I can test for the existence of a previously-defined variable
> using:
>
> if !isdefined(symbol(string(dataset)))
> dataset = include("$(dataset).jl")
> end
>
> but I'm not convinced this works correctly, because this creates a
> variable inside the function...
>
>
