org.gradle.api

## Interface NamedDomainObjectSet<T>

- Type Parameters:
    `T` - The type of element in the set
  All Superinterfaces:
    Collection<T>, DomainObjectCollection<T>, Iterable<T>, NamedDomainObjectCollection<T>, Set<T>
  All Known Subinterfaces:
    AuthenticationContainer, BinaryContainer, BuildDashboardReports, BuildTypeContainer, CheckstyleReports, CodeNarcReports, ConfigurationContainer, DependencyReportContainer, DistributionContainer, ExtensiblePolymorphicDomainObjectContainer<T>, org.gradle.api.internal.ExtensiblePolymorphicDomainObjectContainerInternal<T>, FindBugsReports, FlavorContainer, FunctionalSourceSet, IvyConfigurationContainer, JacocoReportsContainer, JDependReports, NamedDomainObjectContainer<T>, NativeToolChainRegistry, PlatformContainer, PlayDistributionContainer, PmdReports, PolymorphicDomainObjectContainer<T>, org.gradle.api.internal.PolymorphicDomainObjectContainerInternal<T>, PrebuiltLibraries, PublicationContainer, ReportContainer<T>, Repositories, SoftwareComponentContainer, SourceSetContainer, TaskCollection<T>, TaskContainer, TestTaskReports

      public interface NamedDomainObjectSet<T>
      extends NamedDomainObjectCollection<T>, Set<T>

  A specialisation of `NamedDomainObjectCollection` that also implements `Set` and orders objects by their inherent name.

  All object equality is determined in terms of object names. That is, calling `remove()` with an object that is NOT equal to an existing object in terms of `equals`, but IS in terms of name equality will result in the existing collection item with the equal name being removed.

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `Set<T>` | `findAll(Closure spec)` Returns a collection which contains the objects in this collection which meet the given closure specification.
    `NamedDomainObjectSet<T>` | `matching(Closure spec)` Returns a collection which contains the objects in this collection which meet the given closure specification.
    `NamedDomainObjectSet<T>` | `matching(Spec<? super T> spec)` Returns a collection which contains the objects in this collection which meet the given specification.
    `<S extends T> NamedDomainObjectSet<S>` | `withType(Class<S> type)` Returns a collection containing the objects in this collection of the given type.

    - ### Methods inherited from interface org.gradle.api.NamedDomainObjectCollection

      `add, addAll, addRule, addRule, findByName, getAsMap, getAt, getByName, getByName, getNamer, getNames, getRules`

    - ### Methods inherited from interface org.gradle.api.DomainObjectCollection

      `all, all, whenObjectAdded, whenObjectAdded, whenObjectRemoved, whenObjectRemoved, withType, withType`

    - ### Methods inherited from interface java.util.Collection

      `clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray`

    - ### Methods inherited from interface java.util.Set

      `add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray`

- - ### Method Detail

    - #### withType

          <S extends T> NamedDomainObjectSet<S> withType(Class<S> type)

      Returns a collection containing the objects in this collection of the given type. The returned collection is live, so that when matching objects are later added to this collection, they are also visible in the filtered collection.
      Specified by:
        `withType` in interface `DomainObjectCollection<T>`
      Specified by:
        `withType` in interface `NamedDomainObjectCollection<T>`
      Parameters:
        `type` - The type of objects to find.
      Returns:
        The matching objects. Returns an empty collection if there are no such objects in this collection.

    - #### matching

          NamedDomainObjectSet<T> matching(Spec<? super T> spec)

      Returns a collection which contains the objects in this collection which meet the given specification. The returned collection is live, so that when matching objects are added to this collection, they are also visible in the filtered collection.
      Specified by:
        `matching` in interface `DomainObjectCollection<T>`
      Specified by:
        `matching` in interface `NamedDomainObjectCollection<T>`
      Parameters:
        `spec` - The specification to use.
      Returns:
        The collection of matching objects. Returns an empty collection if there are no such objects in this collection.

    - #### matching

          NamedDomainObjectSet<T> matching(Closure spec)

      Returns a collection which contains the objects in this collection which meet the given closure specification. The returned collection is live, so that when matching objects are added to this collection, they are also visible in the filtered collection.
      Specified by:
        `matching` in interface `DomainObjectCollection<T>`
      Specified by:
        `matching` in interface `NamedDomainObjectCollection<T>`
      Parameters:
        `spec` - The specification to use. The closure gets a collection element as an argument.
      Returns:
        The collection of matching objects. Returns an empty collection if there are no such objects in this collection.

    - #### findAll

          Set<T> findAll(Closure spec)

      Returns a collection which contains the objects in this collection which meet the given closure specification.
      Specified by:
        `findAll` in interface `DomainObjectCollection<T>`
      Parameters:
        `spec` - The specification to use. The closure gets a collection element as an argument.
      Returns:
        The collection of matching objects. Returns an empty collection if there are no such objects in this collection.