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Code Issues Packages Projects Releases Wiki Activity

StreamToLoop: reuse variable if possible when the stream is used in the declaration

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This commit is contained in:
Tagir Valeev
2016-12-12 17:27:54 +07:00
parent 810445f21d
commit e87c551445
6 changed files with 85 additions and 61 deletions
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java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamToLoop/afterPartitioningGroupingToSet.java
+6 -5
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@@ -6,13 +6,14 @@ import java.util.stream.Collectors;
public class Main {
public static void test(List<String> strings) {
Map<Boolean, Map<Character, Set<String>>> map = new HashMap<>();
map.put(false, new HashMap<>());
map.put(true, new HashMap<>());
final Map<Boolean, Map<Character, Set<String>>> nestedMap =
new HashMap<>();
nestedMap.put(false, new HashMap<>());
nestedMap.put(true, new HashMap<>());
for (String s : strings) {
map.get(s.length() > 2).computeIfAbsent(s.charAt(0), k -> new HashSet<>()).add(s);
nestedMap.get(s.length() > 2).computeIfAbsent(s.charAt(0), k -> new HashSet<>()).add(s);
}
System.out.println(map);
System.out.println(nestedMap);
}
public static void main(String[] args) {
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamToLoop/afterToMap.java
+3 -3
View File
@@ -5,13 +5,13 @@ import java.util.stream.Collectors;
public class Main {
public static Map<Integer, String> test(List<String> strings) {
Map<Integer, String> map = new HashMap<>();
Map<Integer, String> mapping = new HashMap<>();
for (String str : strings) {
if (map.put(str.length(), str) != null) {
if (mapping.put(str.length(), str) != null) {
throw new IllegalStateException("Duplicate key");
}
}
return map;
return mapping;
}
public static void main(String[] args) {
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamToLoop/beforePartitioningGroupingToSet.java
+3 -1
View File
@@ -6,7 +6,9 @@ import java.util.stream.Collectors;
public class Main {
public static void test(List<String> strings) {
System.out.println(strings.stream().c<caret>ollect(Collectors.partitioningBy((String s) -> s.length() > 2, Collectors.groupingBy(s -> s.charAt(0), Collectors.toSet()))));
final Map<Boolean, Map<Character, Set<String>>> nestedMap =
strings.stream().c<caret>ollect(Collectors.partitioningBy((String s) -> s.length() > 2, Collectors.groupingBy(s -> s.charAt(0), Collectors.toSet())));
System.out.println(nestedMap);
}
public static void main(String[] args) {
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamToLoop/beforeToMap.java
+2 -1
View File
@@ -5,8 +5,9 @@ import java.util.stream.Collectors;
public class Main {
public static Map<Integer, String> test(List<String> strings) {
return strings.stream()
Map<Integer, String> mapping = strings.stream()
.co<caret>llect(Collectors.toMap(String::length, str -> str));
return mapping;
}
public static void main(String[] args) {