Class EnumerableExtensions

Extensions for IEnumerable<T> that don't currently exist in System.Linq.

Inheritance

Object

EnumerableExtensions

Inherited Members

Object.ToString()

Object.Equals(Object)

Object.Equals(Object, Object)

Object.ReferenceEquals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Namespace: IPA.Utilities

Assembly: IPA.Loader.dll

Syntax

public static class EnumerableExtensions

Methods

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Append<T>(IEnumerable<T>, T)

Adds a value to the end of the sequence.

Declaration

public static IEnumerable<T> Append<T>(this IEnumerable<T> seq, T app)

Parameters

Type	Name	Description
IEnumerable<T>	seq	a sequence of values
T	app	the value to append to `seq`

Returns

Type	Description
IEnumerable<T>	a new sequence ending with `app`

Type Parameters

Name	Description
T	the type of the elements of `seq`

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NonNull<T>(IEnumerable<T>)

LINQ-style extension method that filters null elements out of an enumeration.

Declaration

public static IEnumerable<T> NonNull<T>(this IEnumerable<T> self)
    where T : class

Parameters

Type	Name	Description
IEnumerable<T>	self	the enumeration to filter

Returns

Type	Description
IEnumerable<T>	a filtered enumerable

Type Parameters

Name	Description
T	the type of the enumeration

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NonNull<T>(IEnumerable<Nullable<T>>)

LINQ-style extension method that filters null elements from an enumeration of nullable types.

Declaration

public static IEnumerable<T> NonNull<T>(this IEnumerable<T?> self)
    where T : struct

Parameters

Type	Name	Description
IEnumerable<Nullable<T>>	self	the enumeration to filter

Returns

Type	Description
IEnumerable<T>	a filtered enumerable

Type Parameters

Name	Description
T	the underlying type of the nullable enumeration

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NonNull<T, U>(IEnumerable<T>, Func<T, U>)

LINQ-style extension method that filters null elements out of an enumeration based on a converter.

Declaration

public static IEnumerable<T> NonNull<T, U>(this IEnumerable<T> self, Func<T, U> pred)
    where U : class

Parameters

Type	Name	Description
IEnumerable<T>	self	the enumeration to filter
Func<T, U>	pred	the predicate to select for filtering

Returns

Type	Description
IEnumerable<T>	a filtered enumerable

Type Parameters

Name	Description
T	the type of the enumeration
U	the type to compare to null

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NonNull<T, U>(IEnumerable<T>, Func<T, Nullable<U>>)

LINQ-style extension method that filters null elements out of an enumeration based on a converter to a nullable type.

Declaration

public static IEnumerable<T> NonNull<T, U>(this IEnumerable<T> self, Func<T, U?> pred)
    where U : struct

Parameters

Type	Name	Description
IEnumerable<T>	self	the enumeration to filter
Func<T, Nullable<U>>	pred	the predicate to select for filtering

Returns

Type	Description
IEnumerable<T>	a filtered enumerable

Type Parameters

Name	Description
T	the type of the enumeration
U	the type of the predicate's resulting nullable

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Prepend<T>(IEnumerable<T>, T)

Adds a value to the beginning of the sequence.

Declaration

public static IEnumerable<T> Prepend<T>(this IEnumerable<T> seq, T prep)

Parameters

Type	Name	Description
IEnumerable<T>	seq	a sequence of values
T	prep	the value to prepend to `seq`

Returns

Type	Description
IEnumerable<T>	a new sequence beginning with `prep`

Type Parameters

Name	Description
T	the type of the elements of `seq`