Class Collections
Inheritance
System.Object
Collections
Assembly: Lucene.Net.dll
Syntax
public static class Collections : object
Methods
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EmptyList<T>()
Declaration
public static IList<T> EmptyList<T>()
Returns
| Type |
Description |
| IList<T> |
|
Type Parameters
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EmptyMap<TKey, TValue>()
Declaration
public static IDictionary<TKey, TValue> EmptyMap<TKey, TValue>()
Returns
| Type |
Description |
| IDictionary<TKey, TValue> |
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Type Parameters
| Name |
Description |
| TKey |
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| TValue |
|
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Equals(Object, Object)
A helper method to recursively determine equality based on
the values of the collection and all nested collections.
Note this operation currently only supports , ,
and .
Declaration
public static bool Equals(object objA, object objB)
Parameters
| Type |
Name |
Description |
| System.Object |
objA |
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| System.Object |
objB |
|
Returns
| Type |
Description |
| System.Boolean |
|
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Equals<T>(IList<T>, IList<T>)
The same implementation of Equals from Java's AbstractList
(the default implementation for all lists)
This algorithm depends on the order of the items in the list.
It is recursive and will determine equality based on the values of
all nested collections.
Note this operation currently only supports , ,
and .
Declaration
public static bool Equals<T>(IList<T> listA, IList<T> listB)
Parameters
| Type |
Name |
Description |
| IList<T> |
listA |
|
| IList<T> |
listB |
|
Returns
| Type |
Description |
| System.Boolean |
|
Type Parameters
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Equals<T>(ISet<T>, ISet<T>)
The same implementation of Equals from Java's AbstractSet
(the default implementation for all sets)
This algoritm does not depend on the order of the items in the set.
It is recursive and will determine equality based on the values of
all nested collections.
Note this operation currently only supports , ,
and .
Declaration
public static bool Equals<T>(ISet<T> setA, ISet<T> setB)
Parameters
| Type |
Name |
Description |
| ISet<T> |
setA |
|
| ISet<T> |
setB |
|
Returns
| Type |
Description |
| System.Boolean |
|
Type Parameters
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Equals<TKey, TValue>(IDictionary<TKey, TValue>, IDictionary<TKey, TValue>)
This is the same implemenation of Equals from Java's AbstractMap
(the default implementation of all dictionaries)
This algoritm does not depend on the order of the items in the dictionary.
It is recursive and will determine equality based on the values of
all nested collections.
Note this operation currently only supports , ,
and .
Declaration
public static bool Equals<TKey, TValue>(IDictionary<TKey, TValue> dictionaryA, IDictionary<TKey, TValue> dictionaryB)
Parameters
| Type |
Name |
Description |
| IDictionary<TKey, TValue> |
dictionaryA |
|
| IDictionary<TKey, TValue> |
dictionaryB |
|
Returns
| Type |
Description |
| System.Boolean |
|
Type Parameters
| Name |
Description |
| TKey |
|
| TValue |
|
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GetHashCode(Object)
This method generally assists with the recursive GetHashCode() that
builds a hash code based on all of the values in a collection
including any nested collections (lists, sets, arrays, and dictionaries).
Note this currently only supports , ,
and .
Declaration
public static int GetHashCode(object obj)
Parameters
| Type |
Name |
Description |
| System.Object |
obj |
the object to build the hash code for
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Returns
| Type |
Description |
| System.Int32 |
a value that represents the unique state of all of the values and
nested collection values in the object, provided the main object itself is
a collection, otherwise calls on the
object that is passed.
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GetHashCode<T>(IList<T>)
The same implementation of GetHashCode from Java's AbstractList
(the default implementation for all lists).
This algorithm depends on the order of the items in the list.
It is recursive and will build the hash code based on the values of
all nested collections.
Note this operation currently only supports , ,
and .
Declaration
public static int GetHashCode<T>(IList<T> list)
Parameters
| Type |
Name |
Description |
| IList<T> |
list |
|
Returns
| Type |
Description |
| System.Int32 |
|
Type Parameters
|
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GetHashCode<T>(ISet<T>)
The same implementation of GetHashCode from Java's AbstractSet
(the default implementation for all sets)
This algorithm does not depend on the order of the items in the set.
It is recursive and will build the hash code based on the values of
all nested collections.
Note this operation currently only supports , ,
and .
Declaration
public static int GetHashCode<T>(ISet<T> set)
Parameters
| Type |
Name |
Description |
| ISet<T> |
set |
|
Returns
| Type |
Description |
| System.Int32 |
|
Type Parameters
|
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GetHashCode<TKey, TValue>(IDictionary<TKey, TValue>)
The same implementation of GetHashCode from Java's AbstractMap
(the default implementation for all dictionaries)
This algoritm does not depend on the order of the items in the dictionary.
It is recursive and will build the hash code based on the values of
all nested collections.
Note this operation currently only supports , ,
and .
Declaration
public static int GetHashCode<TKey, TValue>(IDictionary<TKey, TValue> dictionary)
Parameters
| Type |
Name |
Description |
| IDictionary<TKey, TValue> |
dictionary |
|
Returns
| Type |
Description |
| System.Int32 |
|
Type Parameters
| Name |
Description |
| TKey |
|
| TValue |
|
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NewSetFromMap<T, S>(IDictionary<T, Nullable<Boolean>>)
Declaration
public static ISet<T> NewSetFromMap<T, S>(IDictionary<T, bool?> map)
Parameters
| Type |
Name |
Description |
| IDictionary<T, System.Nullable<System.Boolean>> |
map |
|
Returns
Type Parameters
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Reverse<T>(IList<T>)
Declaration
public static void Reverse<T>(IList<T> list)
Parameters
| Type |
Name |
Description |
| IList<T> |
list |
|
Type Parameters
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ReverseOrder<T>()
Declaration
public static IComparer<T> ReverseOrder<T>()
Returns
| Type |
Description |
| IComparer<T> |
|
Type Parameters
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ReverseOrder<T>(IComparer<T>)
Declaration
public static IComparer<T> ReverseOrder<T>(IComparer<T> cmp)
Parameters
| Type |
Name |
Description |
| IComparer<T> |
cmp |
|
Returns
| Type |
Description |
| IComparer<T> |
|
Type Parameters
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Shuffle<T>(IList<T>)
Declaration
public static void Shuffle<T>(IList<T> list)
Parameters
| Type |
Name |
Description |
| IList<T> |
list |
|
Type Parameters
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Shuffle<T>(IList<T>, Random)
Declaration
public static void Shuffle<T>(IList<T> list, Random random)
Parameters
| Type |
Name |
Description |
| IList<T> |
list |
|
| Random |
random |
|
Type Parameters
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Singleton<T>(T)
Declaration
public static ISet<T> Singleton<T>(T o)
Parameters
| Type |
Name |
Description |
| T |
o |
|
Returns
Type Parameters
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SingletonMap<TKey, TValue>(TKey, TValue)
Declaration
public static IDictionary<TKey, TValue> SingletonMap<TKey, TValue>(TKey key, TValue value)
Parameters
| Type |
Name |
Description |
| TKey |
key |
|
| TValue |
value |
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Returns
| Type |
Description |
| IDictionary<TKey, TValue> |
|
Type Parameters
| Name |
Description |
| TKey |
|
| TValue |
|
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Swap<T>(IList<T>, Int32, Int32)
Declaration
public static void Swap<T>(IList<T> list, int index1, int index2)
Parameters
| Type |
Name |
Description |
| IList<T> |
list |
|
| System.Int32 |
index1 |
|
| System.Int32 |
index2 |
|
Type Parameters
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ToString(Object)
This is a helper method that assists with recursively building
a string of the current collection and all nested collections.
Declaration
public static string ToString(object obj)
Parameters
| Type |
Name |
Description |
| System.Object |
obj |
|
Returns
| Type |
Description |
| System.String |
|
|
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ToString(Object, CultureInfo)
This is a helper method that assists with recursively building
a string of the current collection and all nested collections, plus the ability
to specify culture for formatting of nested numbers and dates. Note that
this overload will change the culture of the current thread.
Declaration
public static string ToString(object obj, CultureInfo culture)
Parameters
| Type |
Name |
Description |
| System.Object |
obj |
|
| CultureInfo |
culture |
|
Returns
| Type |
Description |
| System.String |
|
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ToString<T>(ICollection<T>)
This is the same implementation of ToString from Java's AbstractCollection
(the default implementation for all sets and lists)
Declaration
public static string ToString<T>(ICollection<T> collection)
Parameters
| Type |
Name |
Description |
| ICollection<T> |
collection |
|
Returns
| Type |
Description |
| System.String |
|
Type Parameters
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ToString<T>(ICollection<T>, CultureInfo)
This is the same implementation of ToString from Java's AbstractCollection
(the default implementation for all sets and lists), plus the ability
to specify culture for formatting of nested numbers and dates. Note that
this overload will change the culture of the current thread.
Declaration
public static string ToString<T>(ICollection<T> collection, CultureInfo culture)
Parameters
| Type |
Name |
Description |
| ICollection<T> |
collection |
|
| CultureInfo |
culture |
|
Returns
| Type |
Description |
| System.String |
|
Type Parameters
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ToString<TKey, TValue>(IDictionary<TKey, TValue>)
This is the same implementation of ToString from Java's AbstractMap
(the default implementation for all dictionaries)
Declaration
public static string ToString<TKey, TValue>(IDictionary<TKey, TValue> dictionary)
Parameters
| Type |
Name |
Description |
| IDictionary<TKey, TValue> |
dictionary |
|
Returns
| Type |
Description |
| System.String |
|
Type Parameters
| Name |
Description |
| TKey |
|
| TValue |
|
|
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ToString<TKey, TValue>(IDictionary<TKey, TValue>, CultureInfo)
This is the same implementation of ToString from Java's AbstractMap
(the default implementation for all dictionaries), plus the ability
to specify culture for formatting of nested numbers and dates. Note that
this overload will change the culture of the current thread.
Declaration
public static string ToString<TKey, TValue>(IDictionary<TKey, TValue> dictionary, CultureInfo culture)
Parameters
| Type |
Name |
Description |
| IDictionary<TKey, TValue> |
dictionary |
|
| CultureInfo |
culture |
|
Returns
| Type |
Description |
| System.String |
|
Type Parameters
| Name |
Description |
| TKey |
|
| TValue |
|
|
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UnmodifiableList<T>(IList<T>)
Declaration
public static IList<T> UnmodifiableList<T>(IList<T> list)
Parameters
| Type |
Name |
Description |
| IList<T> |
list |
|
Returns
| Type |
Description |
| IList<T> |
|
Type Parameters
|
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UnmodifiableMap<TKey, TValue>(IDictionary<TKey, TValue>)
Declaration
public static IDictionary<TKey, TValue> UnmodifiableMap<TKey, TValue>(IDictionary<TKey, TValue> d)
Parameters
| Type |
Name |
Description |
| IDictionary<TKey, TValue> |
d |
|
Returns
| Type |
Description |
| IDictionary<TKey, TValue> |
|
Type Parameters
| Name |
Description |
| TKey |
|
| TValue |
|
|
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UnmodifiableSet<T>(ISet<T>)
Declaration
public static ISet<T> UnmodifiableSet<T>(ISet<T> list)
Parameters
| Type |
Name |
Description |
| ISet<T> |
list |
|
Returns
Type Parameters