Class ListUtil

Namespace

Hi.Common.Collections

Assembly

HiGeom.dll

Provides utility methods for working with lists and collections.

public static class ListUtil

Inheritance

object

ListUtil

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Methods

GetCeilIndex<Item, ItemKey>(IList<Item>, ItemKey, Func<Item, ItemKey, int>, out int)

Gets the ceiling index of an item in a sorted list based on a key comparison.

public static BinarySearchResult GetCeilIndex<Item, ItemKey>(this IList<Item> sortedItems, ItemKey key, Func<Item, ItemKey, int> comparingFunc, out int index)

Parameters

sortedItems IList<Item>

The sorted list to search in.

key ItemKey

The key to search for.

comparingFunc Func<Item, ItemKey, int>

A function that compares an item to the key.

index int

When this method returns, contains the index of the ceiling item if found; otherwise, -1.

Returns

BinarySearchResult

A BinarySearchResult indicating the result of the search.

Type Parameters

Item

The type of items in the list.

ItemKey

The type of the key to search for.

GetCeilIndex<TKey, Item>(IList<Item>, TKey, Func<Item, TKey>, out int)

Gets the ceiling index of an item in a sorted list based on a key selector function.

public static BinarySearchResult GetCeilIndex<TKey, Item>(this IList<Item> sortedItems, TKey keyQuantity, Func<Item, TKey> getKeyQuantityFunc, out int index) where TKey : IComparable<TKey>

Parameters

sortedItems IList<Item>

The sorted list to search in.

keyQuantity TKey

The key to search for.

getKeyQuantityFunc Func<Item, TKey>

A function that extracts the key from an item.

index int

When this method returns, contains the index of the ceiling item if found; otherwise, -1.

Returns

BinarySearchResult

A BinarySearchResult indicating the result of the search.

Type Parameters

TKey

The type of the key.

Item

The type of items in the list.

GetCeil<TKey, Item>(IList<Item>, TKey, Func<Item, TKey>, out Item)

Gets the ceiling item in a sorted list based on a key selector function.

public static BinarySearchResult GetCeil<TKey, Item>(this IList<Item> sortedItems, TKey keyQuantity, Func<Item, TKey> getKeyQuantityFunc, out Item dst) where TKey : IComparable<TKey>

Parameters

sortedItems IList<Item>

The sorted list to search in.

keyQuantity TKey

The key to search for.

getKeyQuantityFunc Func<Item, TKey>

A function that extracts the key from an item.

dst Item

When this method returns, contains the ceiling item if found; otherwise, the default value for the type.

Returns

BinarySearchResult

A BinarySearchResult indicating the result of the search.

Type Parameters

TKey

The type of the key.

Item

The type of items in the list.

GetFloorIndex<Item, ItemKey>(IList<Item>, ItemKey, Func<Item, ItemKey, int>, out int)

Gets the floor index of an item in a sorted list based on a key comparison.

public static BinarySearchResult GetFloorIndex<Item, ItemKey>(this IList<Item> sortedItems, ItemKey key, Func<Item, ItemKey, int> comparingFunc, out int index)

Parameters

sortedItems IList<Item>

The sorted list to search in.

key ItemKey

The key to search for.

comparingFunc Func<Item, ItemKey, int>

A function that compares an item to the key.

index int

When this method returns, contains the index of the floor item if found; otherwise, -1.

Returns

BinarySearchResult

A BinarySearchResult indicating the result of the search.

Type Parameters

Item

The type of items in the list.

ItemKey

The type of the key to search for.

GetFloorIndex<TKey, Item>(IList<Item>, TKey, Func<Item, TKey>, out int)

Gets the floor index of an item in a sorted list based on a key selector function.

public static BinarySearchResult GetFloorIndex<TKey, Item>(this IList<Item> sortedItems, TKey key, Func<Item, TKey> getKeyFunc, out int index) where TKey : IComparable<TKey>

Parameters

sortedItems IList<Item>

The sorted list to search in.

key TKey

The key to search for.

getKeyFunc Func<Item, TKey>

A function that extracts the key from an item.

index int

When this method returns, contains the index of the floor item if found; otherwise, -1.

Returns

BinarySearchResult

A BinarySearchResult indicating the result of the search.

Type Parameters

TKey

The type of the key.

Item

The type of items in the list.

GetFloor<TKey, Item>(IList<Item>, TKey, Func<Item, TKey>, out Item)

Gets the floor item in a sorted list based on a key selector function.

public static BinarySearchResult GetFloor<TKey, Item>(this IList<Item> sortedItems, TKey keyQuantity, Func<Item, TKey> getKeyQuantityFunc, out Item dst) where TKey : IComparable<TKey>

Parameters

sortedItems IList<Item>

The sorted list to search in.

keyQuantity TKey

The key to search for.

getKeyQuantityFunc Func<Item, TKey>

A function that extracts the key from an item.

dst Item

When this method returns, contains the floor item if found; otherwise, the default value for the type.

Returns

BinarySearchResult

A BinarySearchResult indicating the result of the search.

Type Parameters

TKey

The type of the key.

Item

The type of items in the list.

GetIndexBasedEnumerable<TItem>(IList<TItem>)

Creates an enumerable that provides access to all elements in a list by index.

public static ListIndexBasedEnumerable<TItem> GetIndexBasedEnumerable<TItem>(this IList<TItem> src)

Parameters

src IList<TItem>

The source list

Returns

ListIndexBasedEnumerable<TItem>

A ListIndexBasedEnumerable for the entire list

Type Parameters

TItem

The type of elements in the list

GetIndexBasedEnumerable<TItem>(IList<TItem>, int, int)

Creates an enumerable that provides access to a range of elements in a list by index.

public static ListIndexBasedEnumerable<TItem> GetIndexBasedEnumerable<TItem>(this IList<TItem> src, int begin, int end)

Parameters

src IList<TItem>

The source list

begin int

The starting index (inclusive)

end int

The ending index (exclusive)

Returns

ListIndexBasedEnumerable<TItem>

A ListIndexBasedEnumerable for the specified range

Type Parameters

TItem

The type of elements in the list

GetIndexByBinarySearch<TItem>(IList<TItem>, TItem)

Performs a binary search on the specified collection.

public static int GetIndexByBinarySearch<TItem>(this IList<TItem> sortedItems, TItem value)

Parameters

sortedItems IList<TItem>

The list to be searched.

value TItem

The value to search for.

Returns

int

Type Parameters

TItem

The type of the item.

GetIndexByBinarySearch<TItem>(IList<TItem>, TItem, IComparer<TItem>)

Performs a binary search on the specified collection.

public static int GetIndexByBinarySearch<TItem>(this IList<TItem> sortedItems, TItem value, IComparer<TItem> comparer)

Parameters

sortedItems IList<TItem>

The list to be searched.

value TItem

The value to search for.

comparer IComparer<TItem>

The comparer that is used to compare the value with the list items.

Returns

int

Type Parameters

TItem

The type of the item.

GetIndexByBinarySearch<TItem, TSearch>(IList<TItem>, TSearch, Func<TSearch, TItem, int>)

Performs a binary search on the specified collection.

public static int GetIndexByBinarySearch<TItem, TSearch>(this IList<TItem> sortedItems, TSearch value, Func<TSearch, TItem, int> comparer)

Parameters

sortedItems IList<TItem>

The list to be searched.

value TSearch

The value to search for.

comparer Func<TSearch, TItem, int>

The comparer that is used to compare the value with the list items.

Returns

int

Type Parameters

TItem

The type of the item.

TSearch

The type of the searched item.

GetInterpolatedBoundary<TItem>(List<TItem>, double, double, Func<TItem, double>, out TItem, out TItem, out TItem)

Gets interpolated boundary items from a list based on a key value and interval.

public static void GetInterpolatedBoundary<TItem>(this List<TItem> scpList, double z, double zInterval, Func<TItem, double> keyFunc, out TItem cur, out TItem floor, out TItem ceil) where TItem : IAdditionOperators<TItem, TItem, TItem>, IMultiplyOperators<TItem, double, TItem>

Parameters

scpList List<TItem>

The source list.

z double

The key value to find or interpolate at.

zInterval double

The interval to consider around the key value.

keyFunc Func<TItem, double>

A function that extracts the key from an item.

cur TItem

When this method returns, contains the interpolated item at the key value.

floor TItem

When this method returns, contains the floor item.

ceil TItem

When this method returns, contains the ceiling item.

Type Parameters

TItem

The type of items in the list, which must support addition and multiplication operators.

GetInterpolatedValue<TItem>(List<TItem>, double, Func<TItem, double>, OuterPolationMode)

Gets an interpolated value from a sorted list based on a double key, using operators for addition and multiplication.

public static TItem GetInterpolatedValue<TItem>(this List<TItem> sortedItems, double keyQuantity, Func<TItem, double> getKeyQuantityFunc, ListUtil.OuterPolationMode outerPolationMode) where TItem : IAdditionOperators<TItem, TItem, TItem>, IMultiplyOperators<TItem, double, TItem>

Parameters

sortedItems List<TItem>

The sorted list to interpolate from.

keyQuantity double

The key to find or interpolate at.

getKeyQuantityFunc Func<TItem, double>

A function that extracts the key from an item.

outerPolationMode ListUtil.OuterPolationMode

The mode to use when the key is outside the range of the list.

Returns

TItem

The interpolated value.

Type Parameters

TItem

The type of items in the list, which must support addition and multiplication operators.

GetInterpolatedValue<TItem>(List<TItem>, double, Func<TItem, double>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>, OuterPolationMode)

Gets an interpolated value from a sorted list based on a double key.

public static TItem GetInterpolatedValue<TItem>(this List<TItem> sortedItems, double key, Func<TItem, double> getKeyFunc, Func<TItem, TItem, TItem> itemAddingFunc, Func<TItem, double, TItem> itemScalingFunc, ListUtil.OuterPolationMode outerPolationMode)

Parameters

sortedItems List<TItem>

The sorted list to interpolate from.

key double

The key to find or interpolate at.

getKeyFunc Func<TItem, double>

A function that extracts the key from an item.

itemAddingFunc Func<TItem, TItem, TItem>

A function that adds two items together.

itemScalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor.

outerPolationMode ListUtil.OuterPolationMode

The mode to use when the key is outside the range of the list.

Returns

TItem

The interpolated value.

Type Parameters

TItem

The type of items in the list.

GetInterpolatedValue<TItem>(List<TItem>, TimeSpan, Func<TItem, TimeSpan>, OuterPolationMode)

Gets an interpolated value from a sorted list based on a TimeSpan key, using operators for addition and multiplication.

public static TItem GetInterpolatedValue<TItem>(this List<TItem> sortedItems, TimeSpan keyQuantity, Func<TItem, TimeSpan> getKeyQuantityFunc, ListUtil.OuterPolationMode outerPolationMode) where TItem : IAdditionOperators<TItem, TItem, TItem>, IMultiplyOperators<TItem, double, TItem>

Parameters

sortedItems List<TItem>

The sorted list to interpolate from.

keyQuantity TimeSpan

The TimeSpan key to find or interpolate at.

getKeyQuantityFunc Func<TItem, TimeSpan>

A function that extracts the TimeSpan key from an item.

outerPolationMode ListUtil.OuterPolationMode

The mode to use when the key is outside the range of the list.

Returns

TItem

The interpolated value.

Type Parameters

TItem

The type of items in the list, which must support addition and multiplication operators.

GetInterpolatedValue<TItem>(List<TItem>, TimeSpan, Func<TItem, TimeSpan>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>, OuterPolationMode)

Gets an interpolated value from a sorted list based on a TimeSpan key.

public static TItem GetInterpolatedValue<TItem>(this List<TItem> sortedItems, TimeSpan key, Func<TItem, TimeSpan> getKeyFunc, Func<TItem, TItem, TItem> itemAddingFunc, Func<TItem, double, TItem> itemScalingFunc, ListUtil.OuterPolationMode outerPolationMode)

Parameters

sortedItems List<TItem>

The sorted list to interpolate from.

key TimeSpan

The TimeSpan key to find or interpolate at.

getKeyFunc Func<TItem, TimeSpan>

A function that extracts the TimeSpan key from an item.

itemAddingFunc Func<TItem, TItem, TItem>

A function that adds two items together.

itemScalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor.

outerPolationMode ListUtil.OuterPolationMode

The mode to use when the key is outside the range of the list.

Returns

TItem

The interpolated value.

Type Parameters

TItem

The type of items in the list.

GetInterpolatedValue<TKey, TItem>(List<TItem>, TKey, Func<TItem, TKey>, Func<TKey, TKey, int>, Func<TKey, TKey, TKey>, Func<TKey, TKey, double>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>, OuterPolationMode)

Gets an interpolated value from a sorted list based on a key using custom comparison and arithmetic functions.

public static TItem GetInterpolatedValue<TKey, TItem>(this List<TItem> sortedItems, TKey key, Func<TItem, TKey> getKeyFunc, Func<TKey, TKey, int> keyCompareFunc, Func<TKey, TKey, TKey> keyMinusFunc, Func<TKey, TKey, double> keyDivFunc, Func<TItem, TItem, TItem> addingFunc, Func<TItem, double, TItem> scalingFunc, ListUtil.OuterPolationMode outerPolationMode)

Parameters

sortedItems List<TItem>

The sorted list of items

key TKey

The key to search for

getKeyFunc Func<TItem, TKey>

A function that extracts the key from an item

keyCompareFunc Func<TKey, TKey, int>

A function that compares two keys

keyMinusFunc Func<TKey, TKey, TKey>

A function that subtracts one key from another

keyDivFunc Func<TKey, TKey, double>

A function that divides one key by another

addingFunc Func<TItem, TItem, TItem>

A function that adds two items

scalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor

outerPolationMode ListUtil.OuterPolationMode

The mode for handling values outside the range

Returns

TItem

The interpolated value

Type Parameters

TKey

The type of the key

TItem

The type of elements in the list

GetListByKeyBoundary<TKey, TItem>(List<TItem>, Func<TItem, TKey>, TKey, bool, TKey, bool)

Gets a subset of a sorted list based on key boundaries.

public static List<TItem> GetListByKeyBoundary<TKey, TItem>(this List<TItem> sortedItems, Func<TItem, TKey> getKeyQuantityFunc, TKey begin, bool isIncludingBeginFloor, TKey end, bool isIncludingEndCeil) where TKey : IComparable<TKey>

Parameters

sortedItems List<TItem>

The sorted list to filter.

getKeyQuantityFunc Func<TItem, TKey>

A function that extracts the key from an item.

begin TKey

The beginning key of the range.

isIncludingBeginFloor bool

Whether to include the floor of the beginning key.

end TKey

The ending key of the range.

isIncludingEndCeil bool

Whether to include the ceiling of the ending key.

Returns

List<TItem>

A new list containing only the items within the specified key range.

Type Parameters

TKey

The type of the key, which must be comparable.

TItem

The type of items in the list.

GetNearestIndex<TItem, TItemKey>(IList<TItem>, TItemKey, Func<TItem, TItemKey, double>, out int)

Finds the index of the element in a sorted list that is nearest to the specified key.

public static BinarySearchResult GetNearestIndex<TItem, TItemKey>(this IList<TItem> src, TItemKey key, Func<TItem, TItemKey, double> itemToKeyDistanceFunc, out int index)

Parameters

src IList<TItem>

The source list

key TItemKey

The key to search for

itemToKeyDistanceFunc Func<TItem, TItemKey, double>

A function that calculates the distance between an item and the key

index int

When this method returns, contains the index of the nearest element if found; otherwise, -1

Returns

BinarySearchResult

A BinarySearchResult indicating the result of the search

Type Parameters

TItem

The type of elements in the list

TItemKey

The type of the key to search for

GetNearestIndex<TItem, TItemKey>(IList<TItem>, TItemKey, Func<TItem, TItemKey, int>, Func<TItem, TItemKey, double>, out int)

Finds the index of the element in a sorted list that is nearest to the specified key using custom comparison functions.

public static BinarySearchResult GetNearestIndex<TItem, TItemKey>(this IList<TItem> src, TItemKey key, Func<TItem, TItemKey, int> itemCompareToKeyFunc, Func<TItem, TItemKey, double> itemToKeyDistanceFunc, out int index)

Parameters

src IList<TItem>

The source list (must be in ascending order)

key TItemKey

The key to search for

itemCompareToKeyFunc Func<TItem, TItemKey, int>

A function that compares an item to the key

itemToKeyDistanceFunc Func<TItem, TItemKey, double>

A function that calculates the distance between an item and the key

index int

When this method returns, contains the index of the nearest element if found; otherwise, -1

Returns

BinarySearchResult

A BinarySearchResult indicating the result of the search

Type Parameters

TItem

The type of elements in the list

TItemKey

The type of the key to search for

Exceptions

InvalidProgramException

Thrown when an unexpected search result occurs

GetSubListWithInterpolatedHeadAndTail<TItem>(List<TItem>, double, double, Func<TItem, double>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>)

Creates a new list with interpolated head and tail items based on the specified double key range.

public static List<TItem> GetSubListWithInterpolatedHeadAndTail<TItem>(this List<TItem> src, double beginKey, double endKey, Func<TItem, double> getKeyFunc, Func<TItem, TItem, TItem> itemAddingFunc, Func<TItem, double, TItem> itemScalingFunc)

Parameters

src List<TItem>

The source list.

beginKey double

The beginning key of the range.

endKey double

The ending key of the range.

getKeyFunc Func<TItem, double>

A function that extracts the double key from an item.

itemAddingFunc Func<TItem, TItem, TItem>

A function that adds two items together.

itemScalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor.

Returns

List<TItem>

A new list with interpolated head and tail items.

Type Parameters

TItem

The type of items in the list.

GetSubListWithInterpolatedHeadAndTail<TItem>(List<TItem>, TimeSpan, TimeSpan, Func<TItem, TimeSpan>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>)

Creates a new list with interpolated head and tail items based on the specified TimeSpan key range.

public static List<TItem> GetSubListWithInterpolatedHeadAndTail<TItem>(this List<TItem> src, TimeSpan beginKey, TimeSpan endKey, Func<TItem, TimeSpan> getKeyFunc, Func<TItem, TItem, TItem> itemAddingFunc, Func<TItem, double, TItem> itemScalingFunc)

Parameters

src List<TItem>

The source list.

beginKey TimeSpan

The beginning TimeSpan key of the range.

endKey TimeSpan

The ending TimeSpan key of the range.

getKeyFunc Func<TItem, TimeSpan>

A function that extracts the TimeSpan key from an item.

itemAddingFunc Func<TItem, TItem, TItem>

A function that adds two items together.

itemScalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor.

Returns

List<TItem>

A new list with interpolated head and tail items.

Type Parameters

TItem

The type of items in the list.

GetSubListWithInterpolatedHeadAndTail<TKey, TItem>(List<TItem>, TKey, TKey, Func<TItem, TKey>, Func<TKey, TKey, int>, Func<TKey, TKey, TKey>, Func<TKey, TKey, double>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>)

Creates a new list with interpolated head and tail items based on the specified key range.

public static List<TItem> GetSubListWithInterpolatedHeadAndTail<TKey, TItem>(this List<TItem> src, TKey beginKey, TKey endKey, Func<TItem, TKey> getKeyFunc, Func<TKey, TKey, int> keyCompareFunc, Func<TKey, TKey, TKey> keyMinusFunc, Func<TKey, TKey, double> keyDivFunc, Func<TItem, TItem, TItem> itemAddingFunc, Func<TItem, double, TItem> itemScalingFunc)

Parameters

src List<TItem>

The source list.

beginKey TKey

The beginning key of the range.

endKey TKey

The ending key of the range.

getKeyFunc Func<TItem, TKey>

A function that extracts the key from an item.

keyCompareFunc Func<TKey, TKey, int>

A function that compares two keys.

keyMinusFunc Func<TKey, TKey, TKey>

A function that subtracts one key from another.

keyDivFunc Func<TKey, TKey, double>

A function that divides one key by another to get a ratio.

itemAddingFunc Func<TItem, TItem, TItem>

A function that adds two items together.

itemScalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor.

Returns

List<TItem>

A new list with interpolated head and tail items.

Type Parameters

TKey

The type of the key.

TItem

The type of items in the list.

GetSubListWithInterpolatedTail<TItem>(List<TItem>, TimeSpan, Func<TItem, TimeSpan>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>)

Creates a new list with an interpolated tail item based on the specified TimeSpan key.

public static List<TItem> GetSubListWithInterpolatedTail<TItem>(this List<TItem> src, TimeSpan endKey, Func<TItem, TimeSpan> getKeyFunc, Func<TItem, TItem, TItem> addingFunc, Func<TItem, double, TItem> scalingFunc)

Parameters

src List<TItem>

The source list.

endKey TimeSpan

The ending TimeSpan key for interpolation.

getKeyFunc Func<TItem, TimeSpan>

A function that extracts the TimeSpan key from an item.

addingFunc Func<TItem, TItem, TItem>

A function that adds two items together.

scalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor.

Returns

List<TItem>

A new list with an interpolated tail item.

Type Parameters

TItem

The type of items in the list.

GetSubListWithInterpolatedTail<TKey, TItem>(List<TItem>, TKey, Func<TItem, TKey>)

Creates a new list with an interpolated tail item based on the specified key, using operators for both key and item operations.

public static List<TItem> GetSubListWithInterpolatedTail<TKey, TItem>(this List<TItem> src, TKey endKey, Func<TItem, TKey> getKeyFunc) where TKey : IComparable<TKey>, ISubtractionOperators<TKey, TKey, TKey>, IDivisionOperators<TKey, TKey, double> where TItem : IAdditionOperators<TItem, TItem, TItem>, IMultiplyOperators<TItem, double, TItem>

Parameters

src List<TItem>

The source list.

endKey TKey

The ending key for interpolation.

getKeyFunc Func<TItem, TKey>

A function that extracts the key from an item.

Returns

List<TItem>

A new list with an interpolated tail item.

Type Parameters

TKey

The type of the key, which must support comparison, subtraction, and division operators.

TItem

The type of items in the list, which must support addition and multiplication operators.

GetSubListWithInterpolatedTail<TKey, TItem>(List<TItem>, TKey, Func<TItem, TKey>, Func<TKey, TKey, int>, Func<TKey, TKey, TKey>, Func<TKey, TKey, double>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>)

Creates a new list with an interpolated tail item based on the specified key.

public static List<TItem> GetSubListWithInterpolatedTail<TKey, TItem>(this List<TItem> src, TKey endKey, Func<TItem, TKey> getKeyFunc, Func<TKey, TKey, int> keyCompareFunc, Func<TKey, TKey, TKey> keyMinusFunc, Func<TKey, TKey, double> keyDivFunc, Func<TItem, TItem, TItem> itemAddingFunc, Func<TItem, double, TItem> itemScalingFunc)

Parameters

src List<TItem>

The source list.

endKey TKey

The ending key for interpolation.

getKeyFunc Func<TItem, TKey>

A function that extracts the key from an item.

keyCompareFunc Func<TKey, TKey, int>

A function that compares two keys.

keyMinusFunc Func<TKey, TKey, TKey>

A function that subtracts one key from another.

keyDivFunc Func<TKey, TKey, double>

A function that divides one key by another to get a ratio.

itemAddingFunc Func<TItem, TItem, TItem>

A function that adds two items together.

itemScalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor.

Returns

List<TItem>

A new list with an interpolated tail item.

Type Parameters

TKey

The type of the key.

TItem

The type of items in the list.

GetSubListWithInterpolatedTail<TKey, TItem>(List<TItem>, TKey, Func<TItem, TKey>, Func<TItem, TItem, TItem>, Func<TItem, double, TItem>)

Creates a new list with an interpolated tail item based on the specified key, using operators for key operations.

public static List<TItem> GetSubListWithInterpolatedTail<TKey, TItem>(this List<TItem> src, TKey endKey, Func<TItem, TKey> getKeyFunc, Func<TItem, TItem, TItem> addingFunc, Func<TItem, double, TItem> scalingFunc) where TKey : IComparable<TKey>, ISubtractionOperators<TKey, TKey, TKey>, IDivisionOperators<TKey, TKey, double>

Parameters

src List<TItem>

The source list.

endKey TKey

The ending key for interpolation.

getKeyFunc Func<TItem, TKey>

A function that extracts the key from an item.

addingFunc Func<TItem, TItem, TItem>

A function that adds two items together.

scalingFunc Func<TItem, double, TItem>

A function that scales an item by a factor.

Returns

List<TItem>

A new list with an interpolated tail item.

Type Parameters

TKey

The type of the key, which must support comparison, subtraction, and division operators.

TItem

The type of items in the list.

Swap<TItem>(IList<TItem>, int, int)

Swaps two elements in a list at the specified indices.

public static void Swap<TItem>(this IList<TItem> src, int indexA, int indexB)

Parameters

src IList<TItem>

The source list

indexA int

The index of the first element to swap

indexB int

The index of the second element to swap

Type Parameters

TItem

The type of elements in the list

TestFloorCeil()

Tests the floor and ceiling functionality with sample data.

public static void TestFloorCeil()