sets

package
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Published: Feb 27, 2025 License: Apache-2.0 Imports: 5 Imported by: 1

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func List

func List[T cmp.Ordered](s Set[T]) []T

List returns the contents as a sorted T slice.

This is a separate function and not a method because not all types supported by Generic are ordered and only those can be sorted.

func NewErrors

func NewErrors(errs []error) error

Types

type Empty

type Empty struct{}

Empty is public since it is used by some internal API objects for conversions between external string arrays and internal sets, and conversion logic requires public types today.

type Set

type Set[T comparable] map[T]Empty

Set is a set of the same type elements, implemented via map[comparable]struct{} for minimal memory consumption.

func KeySet

func KeySet[T comparable, V any](theMap map[T]V) Set[T]

KeySet creates a Set from a keys of a map[comparable](? extends interface{}). If the value passed in is not actually a map, this will panic.

func New

func New[T comparable](items ...T) Set[T]

New creates a Set from a list of values. NOTE: type param must be explicitly instantiated if given items are empty.

func NewWithSize

func NewWithSize[T comparable](size int, items ...T) Set[T]

NewWithSize creates a Set from a list of values with size.

func (Set[T]) Add

func (s Set[T]) Add(items ...T) Set[T]

Add adds items to the set.

func (Set[T]) Clear

func (s Set[T]) Clear() Set[T]

Clear empties the set. It is preferable to replace the set with a newly constructed set, but not all callers can do that (when there are other references to the map).

func (Set[T]) Clone

func (s Set[T]) Clone() Set[T]

Clone returns a new set which is a copy of the current set.

func (Set[T]) Difference

func (s Set[T]) Difference(s2 Set[T]) Set[T]

Difference returns a set of objects that are not in s2. For example: s1 = {a1, a2, a3} s2 = {a1, a2, a4, a5} s1.Difference(s2) = {a3} s2.Difference(s1) = {a4, a5}

func (Set[T]) Equal

func (s Set[T]) Equal(s2 Set[T]) bool

Equal returns true if and only if s1 is equal (as a set) to s2. Two sets are equal if their membership is identical. (In practice, this means same elements, order doesn't matter)

func (Set[T]) Has

func (s Set[T]) Has(item T) bool

Has returns true if and only if item is contained in the set.

func (Set[T]) HasAll

func (s Set[T]) HasAll(items ...T) bool

HasAll returns true if and only if all items are contained in the set.

func (Set[T]) HasAny

func (s Set[T]) HasAny(items ...T) bool

HasAny returns true if any items are contained in the set.

func (Set[T]) Intersection

func (s Set[T]) Intersection(s2 Set[T]) Set[T]

Intersection returns a new set which includes the item in BOTH s1 and s2 For example: s1 = {a1, a2} s2 = {a2, a3} s1.Intersection(s2) = {a2}

func (Set[T]) IsSuperset

func (s Set[T]) IsSuperset(s2 Set[T]) bool

IsSuperset returns true if and only if s1 is a superset of s2.

func (Set[T]) IsZero

func (s Set[T]) IsZero() bool

IsZero returns true if set does not contain any elements.

func (Set[T]) Len

func (s Set[T]) Len() int

Len returns the size of the set.

func (Set[T]) MarshalJSON

func (s Set[T]) MarshalJSON() ([]byte, error)

MarshalJSON @implements json.Marshaler

func (Set[T]) PopAny

func (s Set[T]) PopAny() (T, bool)

PopAny returns a single element from the set.

func (Set[T]) Range

func (s Set[T]) Range(fn func(item T) error) error

Range all items by fn.

func (Set[T]) Remove

func (s Set[T]) Remove(items ...T) Set[T]

Remove removes all items from the set.

func (Set[T]) String

func (s Set[T]) String() string

String returns a string representation of container

func (Set[T]) SymmetricDifference

func (s Set[T]) SymmetricDifference(s2 Set[T]) Set[T]

SymmetricDifference returns a set of elements which are in either of the sets, but not in their intersection. For example: s1 = {a1, a2, a3} s2 = {a1, a2, a4, a5} s1.SymmetricDifference(s2) = {a3, a4, a5} s2.SymmetricDifference(s1) = {a3, a4, a5}

func (Set[T]) Union

func (s Set[T]) Union(s2 Set[T]) Set[T]

Union returns a new set which includes items in either s1 or s2. For example: s1 = {a1, a2} s2 = {a3, a4} s1.Union(s2) = {a1, a2, a3, a4} s2.Union(s1) = {a1, a2, a3, a4}

func (*Set[T]) UnmarshalJSON

func (s *Set[T]) UnmarshalJSON(data []byte) error

UnmarshalJSON @implements json.Unmarshaler

func (Set[T]) UnsortedList

func (s Set[T]) UnsortedList() []T

UnsortedList returns the slice with contents in random order.

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