counter

Documentation

Index

• type Counter
  • func New() Counter
• type Difference
  • func (d Difference) String() string
• type M

Types

type Counter

type Counter interface {
	// Add increments the value for key by delta.
	Add(key interface{}, delta int)

	// Values returns the counted values.
	Values() M

	// Diff returns the difference between the counted values and m. A return
	// value of nil indicates no difference.
	Diff(m M) []Difference
}

Counter adds integers for different keys.

func New

func New() Counter

New returns a counter that is safe for concurrent use by multiple goroutines.

type Difference

type Difference struct {
	Key  interface{}
	Got  int
	Want int
}

Difference represents a mismatch of an actual value and an expected value for a key in a counter.

func (Difference) String

func (d Difference) String() string

type M

type M map[interface{}]int

M is a map with a counted values.