Class AbpCollectionExtensions
Extension methods for Collections.
Inheritance
Namespace: System.Collections.Generic
Assembly: Volo.Abp.Core.dll
Syntax
public static class AbpCollectionExtensions : objectMethods
AddIfNotContains<T>(ICollection<T>, T)
Adds an item to the collection if it's not already in the collection.
Declaration
public static bool AddIfNotContains<T>(this ICollection<T> source, T item)Parameters
| Type | Name | Description |
|---|---|---|
| ICollection<T> | source | The collection |
| T | item | Item to check and add |
Returns
| Type | Description |
|---|---|
| System.Boolean | Returns True if added, returns False if not. |
Type Parameters
| Name | Description |
|---|---|
| T | Type of the items in the collection |
AddIfNotContains<T>(ICollection<T>, Func<T, Boolean>, Func<T>)
Adds an item to the collection if it's not already in the collection based on the given predicate.
Declaration
public static bool AddIfNotContains<T>(this ICollection<T> source, Func<T, bool> predicate, Func<T> itemFactory)Parameters
| Type | Name | Description |
|---|---|---|
| ICollection<T> | source | The collection |
| Func<T, System.Boolean> | predicate | The condition to decide if the item is already in the collection |
| Func<T> | itemFactory | A factory that returns the item |
Returns
| Type | Description |
|---|---|
| System.Boolean | Returns True if added, returns False if not. |
Type Parameters
| Name | Description |
|---|---|
| T | Type of the items in the collection |
AddIfNotContains<T>(ICollection<T>, IEnumerable<T>)
Adds items to the collection which are not already in the collection.
Declaration
public static IEnumerable<T> AddIfNotContains<T>(this ICollection<T> source, IEnumerable<T> items)Parameters
| Type | Name | Description |
|---|---|---|
| ICollection<T> | source | The collection |
| IEnumerable<T> | items | Item to check and add |
Returns
| Type | Description |
|---|---|
| IEnumerable<T> | Returns the added items. |
Type Parameters
| Name | Description |
|---|---|
| T | Type of the items in the collection |
IsNullOrEmpty<T>(ICollection<T>)
Checks whatever given collection object is null or has no item.
Declaration
public static bool IsNullOrEmpty<T>(this ICollection<T> source)Parameters
| Type | Name | Description |
|---|---|---|
| ICollection<T> | source |
Returns
| Type | Description |
|---|---|
| System.Boolean |
Type Parameters
| Name | Description |
|---|---|
| T |
RemoveAll<T>(ICollection<T>, Func<T, Boolean>)
Removes all items from the collection those satisfy the given predicate.
Declaration
public static IList<T> RemoveAll<T>(this ICollection<T> source, Func<T, bool> predicate)Parameters
| Type | Name | Description |
|---|---|---|
| ICollection<T> | source | The collection |
| Func<T, System.Boolean> | predicate | The condition to remove the items |
Returns
| Type | Description |
|---|---|
| IList<T> | List of removed items |
Type Parameters
| Name | Description |
|---|---|
| T | Type of the items in the collection |