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60 lines
2.6 KiB
Java
60 lines
2.6 KiB
Java
// "Fix all 'Loop can be collapsed with Stream API' problems in file" "true"
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import java.util.*;
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import java.util.concurrent.TimeUnit;
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import java.util.stream.Collectors;
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public class Test {
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void testList(List<String> input) {
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List<String> result = input.stream().filter(s -> !s.isEmpty()).collect(Collectors.toCollection(() -> new ArrayList<>(10)));
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System.out.println(result);
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ArrayList<String> result2 = input.stream().filter(s -> !s.isEmpty()).collect(Collectors.toCollection(() -> new ArrayList<>(20)));
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System.out.println(result2);
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// Non-empty
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ArrayList<String> result3 = new ArrayList<>(input);
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input.stream().filter(s -> !s.isEmpty()).forEach(result3::add);
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System.out.println(result3);
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// Non-final var used in initializer
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int size = 5;
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if(size < input.size()) size = input.size();
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List<String> result4 = new ArrayList<>(size);
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input.stream().filter(s -> !s.isEmpty()).forEach(result4::add);
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System.out.println(result4);
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}
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void testSet(List<String> input) {
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Set<String> result = input.stream().filter(s -> !s.isEmpty()).collect(Collectors.toCollection(() -> new HashSet<>(10)));
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System.out.println(result);
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Collection<String> result2 = input.stream().filter(s -> !s.isEmpty()).collect(Collectors.toCollection(() -> new LinkedHashSet<>(20, 0.8f)));
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System.out.println(result2);
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// Non-empty
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AbstractSet<String> result3 = new HashSet<>(input);
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input.stream().filter(s -> !s.isEmpty()).forEach(result3::add);
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System.out.println(result3);
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Collection<TimeUnit> result4 = input.stream().filter(s -> !s.isEmpty()).map(TimeUnit::valueOf).collect(Collectors.toCollection(() -> EnumSet.noneOf(TimeUnit.class)));
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System.out.println(result4);
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}
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void testMap(List<String> input) {
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Map<Integer, String> result = input.stream().filter(s -> !s.isEmpty()).collect(Collectors.toMap(String::length, s -> s, (a, b) -> b, () -> new HashMap<>(10)));
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System.out.println(result);
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Map<Integer, String> result2 = input.stream().filter(s -> !s.isEmpty()).collect(Collectors.toMap(String::length, s -> s, (a, b) -> b, () -> new HashMap<>(10, 0.8f)));
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System.out.println(result2);
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EnumMap<TimeUnit, String> result3 = input.stream().filter(s -> !s.isEmpty()).collect(Collectors.toMap(TimeUnit::valueOf, s -> s, (a, b) -> b, () -> new EnumMap<>(TimeUnit.class)));
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System.out.println(result3);
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// Non-empty
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EnumMap<TimeUnit, String> result4 = new EnumMap<>(result3);
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input.stream().filter(s -> !s.isEmpty()).forEach(s -> result4.put(TimeUnit.valueOf(s), s));
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System.out.println(result4);
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}
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}
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