Merge change Ie70845ca into eclair-mr2
* changes: Add Sets#newSortedSet()
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@@ -44,41 +44,50 @@ public class Sets {
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return new HashSet<K>();
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}
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/**
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* Creates a {@code HashSet} instance containing the given elements.
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*
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* <p><b>Note:</b> due to a bug in javac 1.5.0_06, we cannot support the
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* following:
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*
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* <p>{@code Set<Base> set = Sets.newHashSet(sub1, sub2);}
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*
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* <p>where {@code sub1} and {@code sub2} are references to subtypes of {@code
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* Base}, not of {@code Base} itself. To get around this, you must use:
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*
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* <p>{@code Set<Base> set = Sets.<Base>newHashSet(sub1, sub2);}
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*
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* @param elements the elements that the set should contain
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* @return a newly-created {@code HashSet} containing those elements (minus
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* duplicates)
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*/
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public static <E> HashSet<E> newHashSet(E... elements) {
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int capacity = elements.length * 4 / 3 + 1;
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HashSet<E> set = new HashSet<E>(capacity);
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Collections.addAll(set, elements);
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return set;
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}
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/**
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* Creates a {@code HashSet} instance containing the given elements.
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*
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* <p><b>Note:</b> due to a bug in javac 1.5.0_06, we cannot support the
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* following:
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*
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* <p>{@code Set<Base> set = Sets.newHashSet(sub1, sub2);}
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*
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* <p>where {@code sub1} and {@code sub2} are references to subtypes of {@code
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* Base}, not of {@code Base} itself. To get around this, you must use:
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*
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* <p>{@code Set<Base> set = Sets.<Base>newHashSet(sub1, sub2);}
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*
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* @param elements the elements that the set should contain
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* @return a newly-created {@code HashSet} containing those elements (minus
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* duplicates)
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*/
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public static <E> HashSet<E> newHashSet(E... elements) {
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int capacity = elements.length * 4 / 3 + 1;
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HashSet<E> set = new HashSet<E>(capacity);
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Collections.addAll(set, elements);
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return set;
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}
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/**
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* Creates a {@code SortedSet} instance containing the given elements.
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*
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* @param elements the elements that the set should contain
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* @return a newly-created {@code SortedSet} containing those elements (minus
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* duplicates)
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*/
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public static <E> SortedSet<E> newSortedSet(E... elements) {
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SortedSet<E> set = new TreeSet<E>();
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Collections.addAll(set, elements);
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return set;
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}
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/**
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* Creates an empty {@code SortedSet} instance.
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*
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* @return a newly-created, initially-empty {@code SortedSet}.
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*/
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public static <E> SortedSet<E> newSortedSet() {
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return new TreeSet<E>();
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}
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/**
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* Creates a {@code SortedSet} instance containing the given elements.
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*
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* @param elements the elements that the set should contain
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* @return a newly-created {@code SortedSet} containing those elements (minus
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* duplicates)
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*/
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public static <E> SortedSet<E> newSortedSet(E... elements) {
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SortedSet<E> set = new TreeSet<E>();
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Collections.addAll(set, elements);
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return set;
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}
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}
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