Java 8 Lambda Streams
- What is and Why Streams?
- Intermediate and terminal operations
What is and Why Streams?
What is a Stream?
- Wrappers around data sources (examples of data sources are arrays or lists)
- Stream itself does not store data
- Stream carry values from a data source through a pipeline of operations
- Supports many convenient and high-performance operations expressed succinctly with Lambda expressions
- All Stream operations take Lambda expressions as arguments
- Operations can be executed in sequence or in parallel
- Parallel operation results in better performance when there are large number of items
- Support laziness
- Many Stream operations are postponed until how much data is eventually needed – this result in more efficient operations
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