Streams completed #57
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senia-psm
reviewed
Apr 18, 2017
| List<Employee> employees = generateEmployeeList(); | ||
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| List<Person> personList = employees.stream() | ||
| .filter(e -> e.getJobHistory().get(0).getEmployer().equals("epam")) |
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Don't use get - it fails on empty collection.
| throw new UnsupportedOperationException(); | ||
| Map<String, List<Person>> employeesIndex = getEmployees().stream() | ||
| .map(employee -> new PersonEmployerPair(employee.getPerson(), | ||
| employee.getJobHistory().get(0).getEmployer(), |
| // TODO | ||
| throw new UnsupportedOperationException(); | ||
| Map<String, List<PersonPositionDuration>> map = employees.stream() | ||
| .flatMap(this::positionDuration) |
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Simplify. You can ad additional method to aggregate durations for a single person like this flatMap(this::groupPersonDurations)
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done by Gladun Nikita