Type-safe flattening of nested collections/structures in Java
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30-10-2019 - |
Question
I would like to flatten arbitrary deeply nested collections/structures of elements of some type T in Java, optimally with
- only having a live view and not a copied collection;
- not only handling Collections, but also Iterator, arrays of T of arbitrary dimension, Iterable, and all these structures arbitrarily mixed and nested;
- statical type-safety.
Is there a java library which can handle this?
Guava seems to only handle one nesting level, i.e. Collection<Collection<T>>
--flatten--> Collection<T>
.
lambdaj looks promising: can I somehow combine on()
, asIterator()
and flattenIterator()
to achieve this? In a statically type-safe manner?
No correct solution
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