talsma-ict / misc-java-utils / 14774393054

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Add StreamUtils utility class. (#105)

* Add StreamUtils utility class.

- streamNullable to safely stream any iterable, even null.
- last(n) to collect the last n elements from a stream.

Signed-off-by: Sjoerd Talsma <sjoerdtalsma@users.noreply.github.com>

* Add caveat in javadoc.

Signed-off-by: Sjoerd Talsma <sjoerdtalsma@users.noreply.github.com>

* Add unittest for the utility-class unsupported constructor.

Signed-off-by: Sjoerd Talsma <sjoerdtalsma@users.noreply.github.com>

* Suppress and explain sonar warning.

Signed-off-by: Sjoerd Talsma <sjoerdtalsma@users.noreply.github.com>

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Signed-off-by: Sjoerd Talsma <sjoerdtalsma@users.noreply.github.com>

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