multisort

Documentation

Index

• type CompareFn
• type CompareResult
  • func Compare[O constraints.Ordered](a O, b O, descending bool) CompareResult
  • func WithCompareFunc(f func() int, descending bool) CompareResult
• type FieldMap
• type Key
• type Keys
• type Sorter
  • func New[E any](fields FieldMap[E], defaultSortKeys Keys) *Sorter[E]
  • func (s *Sorter[E]) AvailableKeys() []string
  • func (s *Sorter[E]) SortBy(data []E, keys ...Key) error

Types

type CompareFn

type CompareFn[E any] func(a E, b E, descending bool) CompareResult

CompareFn is compare function that compares the two given values according to multisort criteria.

The function is implemented for comparable data types inside this package. Use it!

It returns: - Less when a is smaller than b (on descending: b is smaller than a) - NotEqual when a is not equal to b - 0 when neither less or not equal is returned

type CompareResult

type CompareResult int

const (
	Less     CompareResult = 1
	NotEqual CompareResult = 2
)

func Compare

func Compare[O constraints.Ordered](a O, b O, descending bool) CompareResult

Compare compares values according to multisort criteria.

func WithCompareFunc

func WithCompareFunc(f func() int, descending bool) CompareResult

WithCompareFunc compares input and returns a CompareResult according to multisort criteria.

type FieldMap

type FieldMap[E any] map[string]CompareFn[E]

FieldMap defines the fields that the sorter is capable to sort and provides the corresponsing compare funcs.

type Key

type Key struct {
	ID         string
	Descending bool
}

Key is the key that will be sorted by.

type Keys

type Keys []Key

type Sorter

type Sorter[E any] struct {
	// contains filtered or unexported fields
}

Sorter can sort by multiple criteria.

func New

func New[E any](fields FieldMap[E], defaultSortKeys Keys) *Sorter[E]

New creates a new multisorter.

func (*Sorter[E]) AvailableKeys

func (s *Sorter[E]) AvailableKeys() []string

AvailableKeys returns the available sort keys that this sorter has been initialized with.

func (*Sorter[E]) SortBy

func (s *Sorter[E]) SortBy(data []E, keys ...Key) error

SortBy sorts the given data by the given sort keys.