Slices

Documentation

Index

• func FilterNilValues[T any](S []*T) []*T
• func Find[T comparable](S []T, elem T) int
• func FindEquals[T uc.Objecter](S []T, elem T) int
• func FindSubsliceFrom[T comparable](S []T, subS []T, at int) int
• func FindSubsliceFromEquals[T uc.Objecter](S []T, subS []T, at int) int
• func IndexOfDuplicate[T comparable](S []T) int
• func IndexOfDuplicateEquals[T uc.Objecter](S []T) int
• func MergeUnique[T comparable](S1, S2 []T) []T
• func MergeUniqueEquals[T uc.Objecter](S1, S2 []T) []T
• func SFSeparate[T any](S []T, filter PredicateFilter[T]) ([]T, []T)
• func SFSeparateEarly[T any](S []T, filter PredicateFilter[T]) ([]T, bool)
• func SliceFilter[T any](S []T, filter PredicateFilter[T]) []T
• func Uniquefy[T comparable](S []T) []T
• func UniquefyEquals[T uc.Objecter](S []T) []T
• type PredicateFilter
  • func FilterNilPredicates[T any](S []PredicateFilter[T]) []PredicateFilter[T]
  • func Intersect[T any](funcs ...PredicateFilter[T]) PredicateFilter[T]
  • func ParallelIntersect[T any](funcs ...PredicateFilter[T]) PredicateFilter[T]
  • func ParallelUnion[T any](funcs ...PredicateFilter[T]) PredicateFilter[T]
  • func Union[T any](funcs ...PredicateFilter[T]) PredicateFilter[T]

Functions

func FilterNilValues

func FilterNilValues[T any](S []*T) []*T

FilterNilValues is a function that iterates over the slice and removes the nil elements.

Parameters:

• S: slice of elements.

Returns:

• []*T: slice of elements that satisfy the filter function.

Behavior:

• If S is empty, the function returns a nil slice.

func Find

func Find[T comparable](S []T, elem T) int

Find returns the index of the first occurrence of an element in the slice.

Parameters:

• S: slice of elements.
• elem: element to find.

Returns:

• int: index of the first occurrence of the element or -1 if not found.

func FindEquals

func FindEquals[T uc.Objecter](S []T, elem T) int

FindEquals is the same as Find but uses the Equals method of the elements.

Parameters:

• S: slice of elements.
• elem: element to find.

Returns:

• int: index of the first occurrence of the element or -1 if not found.

func FindSubsliceFrom

func FindSubsliceFrom[T comparable](S []T, subS []T, at int) int

FindSubBytesFrom finds the first occurrence of a subslice in a byte slice starting from a given index.

Parameters:

• S: The byte slice to search in.
• subS: The byte slice to search for.
• at: The index to start searching from.

Returns:

• int: The index of the first occurrence of the subslice.

Behavior:

• The function uses the Knuth-Morris-Pratt algorithm to find the subslice.
• If S or subS is empty, the function returns -1.
• If the subslice is not found, the function returns -1.
• If at is negative, it is set to 0.

func FindSubsliceFromEquals

func FindSubsliceFromEquals[T uc.Objecter](S []T, subS []T, at int) int

FindSubsliceFromEquals finds the first occurrence of a subslice in a byte slice starting from a given index using a custom comparison function.

Parameters:

• S: The byte slice to search in.
• subS: The byte slice to search for.
• at: The index to start searching from.

Returns:

• int: The index of the first occurrence of the subslice.

Behavior:

• The function uses the Knuth-Morris-Pratt algorithm to find the subslice.
• If S or subS is empty, the function returns -1.
• If the subslice is not found, the function returns -1.
• If at is negative, it is set to 0.

func IndexOfDuplicate

func IndexOfDuplicate[T comparable](S []T) int

IndexOfDuplicate returns the index of the first duplicate element in the slice.

Parameters:

• S: slice of elements.

Returns:

• int: index of the first duplicate element or -1 if there are no duplicates.

func IndexOfDuplicateEquals

func IndexOfDuplicateEquals[T uc.Objecter](S []T) int

IndexOfDuplicateEquals is the same as IndexOfDuplicate but uses the Equals method of the elements.

Parameters:

• S: slice of elements.

Returns:

• int: index of the first duplicate element or -1 if there are no duplicates.

func MergeUnique

func MergeUnique[T comparable](S1, S2 []T) []T

MergeUnique merges two slices and removes duplicate elements.

Parameters:

• S1: first slice of elements.
• S2: second slice of elements.

Returns:

• []T: slice of elements with duplicates removed.

Behaviors:

• The function does not preserve the order of the elements in the slices.

func MergeUniqueEquals

func MergeUniqueEquals[T uc.Objecter](S1, S2 []T) []T

MergeUniqueEquals is the same as MergeUnique but uses the Equals method of the elements.

Parameters:

• S1: first slice of elements.
• S2: second slice of elements.

Returns:

• []T: slice of elements with duplicates removed.

Behaviors:

• The function does preserve the order of the elements in the slices.

func SFSeparate

func SFSeparate[T any](S []T, filter PredicateFilter[T]) ([]T, []T)

SFSeparate is a function that iterates over the slice and applies the filter function to each element. The returned slices contain the elements that satisfy and do not satisfy the filter function.

Parameters:

• S: slice of elements.
• filter: function that takes an element and returns a bool.

Returns:

• []T: slice of elements that satisfy the filter function.
• []T: slice of elements that do not satisfy the filter function.

Behavior:

• If S is empty, the function returns two empty slices.

func SFSeparateEarly

func SFSeparateEarly[T any](S []T, filter PredicateFilter[T]) ([]T, bool)

SFSeparateEarly is a variant of SFSeparate that returns all successful elements. If there are none, it returns the original slice and false.

Parameters:

• S: slice of elements.
• filter: function that takes an element and returns a bool.

Returns:

• []T: slice of elements that satisfy the filter function or the original slice.
• bool: true if there are successful elements, otherwise false.

Behavior:

• If S is empty, the function returns an empty slice and true.

func SliceFilter

func SliceFilter[T any](S []T, filter PredicateFilter[T]) []T

SliceFilter is a function that iterates over the slice and applies the filter function to each element.

Parameters:

• S: slice of elements.
• filter: function that takes an element and returns a bool.

Returns:

• []T: slice of elements that satisfy the filter function.

Behavior:

• If S is empty, the function returns a nil slice.
• If S has only one element and it satisfies the filter function, the function returns a slice with that element. Otherwise, it returns a nil slice.
• An element is said to satisfy the filter function if the function returns true when applied to the element.
• If the filter function is nil, the function returns the original slice.

func Uniquefy

func Uniquefy[T comparable](S []T) []T

Uniquefy removes duplicate elements from the slice.

Parameters:

• S: slice of elements.

Returns:

• []T: slice of elements with duplicates removed.

Behavior:

• The function preserves the order of the elements in the slice.

func UniquefyEquals

func UniquefyEquals[T uc.Objecter](S []T) []T

UniquefyEquals is the same as Uniquefy but uses the Equals method of the elements.

Parameters:

• S: slice of elements.

Returns:

• []T: slice of elements with duplicates removed.

Behavior:

• The function preserves the order of the elements in the slice.
• This can modify the original slice.

Types

type PredicateFilter

type PredicateFilter[T any] func(T) bool

PredicateFilter is a type that defines a slice filter function.

Parameters:

• T: The type of the elements in the slice.

Returns:

• bool: True if the element satisfies the filter function, otherwise false.

func FilterNilPredicates

func FilterNilPredicates[T any](S []PredicateFilter[T]) []PredicateFilter[T]

FilterNilPredicates is a function that iterates over the slice and removes the nil predicate functions.

Parameters:

• S: slice of predicate functions.

Returns:

• []PredicateFilter: slice of predicate functions that are not nil.

Behavior:

• If S is empty, the function returns a nil slice.

func Intersect

func Intersect[T any](funcs ...PredicateFilter[T]) PredicateFilter[T]

Intersect returns a PredicateFilter function that checks if an element satisfies all the PredicateFilter functions in funcs.

Parameters:

• funcs: A slice of PredicateFilter functions.

Returns:

• PredicateFilter: A PredicateFilter function that checks if a element satisfies all the PredicateFilter functions in funcs.

Behavior:

• If no filter functions are provided, then all elements are considered to satisfy the filter function.
• It returns false as soon as it finds a function in funcs that the element does not satisfy.

func ParallelIntersect

func ParallelIntersect[T any](funcs ...PredicateFilter[T]) PredicateFilter[T]

ParallelIntersect returns a PredicateFilter function that checks if an element satisfies all the PredicateFilter functions in funcs concurrently.

Parameters:

• funcs: A slice of PredicateFilter functions.

Returns:

• PredicateFilter: A PredicateFilter function that checks if a element satisfies all the PredicateFilter functions in funcs.

Behavior:

• If no filter functions are provided, then all elements are considered to satisfy the filter function.
• It returns false as soon as it finds a function in funcs that the element does not satisfy.

func ParallelUnion

func ParallelUnion[T any](funcs ...PredicateFilter[T]) PredicateFilter[T]

ParallelUnion returns a PredicateFilter function that checks if an element satisfies at least one of the PredicateFilter functions in funcs concurrently.

Parameters:

• funcs: A slice of PredicateFilter functions.

Returns:

• PredicateFilter: A PredicateFilter function that checks if a element satisfies at least one of the PredicateFilter functions in funcs.

Behavior:

• If no filter functions are provided, then no elements are considered to satisfy the filter function.
• It returns true as soon as it finds a function in funcs that the element satisfies.

func Union

func Union[T any](funcs ...PredicateFilter[T]) PredicateFilter[T]

Union returns a PredicateFilter function that checks if an element satisfies at least one of the PredicateFilter functions in funcs.

Parameters:

• funcs: A slice of PredicateFilter functions.

Returns:

• PredicateFilter: A PredicateFilter function that checks if a element satisfies at least one of the PredicateFilter functions in funcs.

Behavior:

• If no filter functions are provided, then no elements are considered to satisfy the filter function.
• It returns true as soon as it finds a function in funcs that the element satisfies.