Comparing Unequal Dictionaries

New to Julia
2

It depends on what you want. What should the difference be if one key is not present in both dicts?
Assuming a default value of 0, the result could look something like

difference = sum(values(mergewith( (x,y) -> abs(x-y), a, b)))

Or a bit more verbose so you can better see what is going on could be:

diff = 0
same = intersect(keys(a), keys(b))
for i in same
    diff += abs(a[i]-b[i])
end
for i in setdiff(keys(a), same)
    diff += a[i]
end
for i in setdiff(keys(b), same)
    diff += b[i]
end

I would also like to suggest reading this post:

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