On 24.05.20 19:38, David Mertz wrote:
As syntax, I presume this would be something like:
output = []
for x in data:
a = delayed inc(x)
b = delayed double(x)
c = delayed add(a, b)
output.append(c)
total = sum(outputs) # concrete answer here.
Obviously the simple example of adding scalars isn't worth the delay
thing. But if those were expensive operations that built up a call
graph, it could be useful laziness.
Do you have an example which can't be solved by using generator
expressions and itertools? As far as I understand the Dask docs the
purpose of this is to execute in parallel which wouldn't be the case for
pure Python I suppose? The above example can be written as:
a = (inc(x) for x in data)
b = (double(x) for x in data)
c = (add(x, y) for x, y in zip(a, b))
total = sum(c)
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