Filter Sequence - Does It Matter?

Question

Let's review what we have the following boolean condition
A,B,C,D.
Now we want to filter the list according to them:
list.stream().filter(x -> A).filter(x -> B).filter(x -> C).filter(x -> D)

list.stream().filter(x -> A && B && C && D)

Which way is better? I mean efficiency and elegance.

Answer 1

In terms of feed efficiency, the combined filter will be a little better. But cases where it really matters to your application should be very rare. I would consider it as premature optimization .

And the cost of introducing such optimizations is closely related, prone to code errors, which does for many things at once and cannot be easily tested.

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Answer 2

, ; filter, filter . .

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