helper

Documentation

Index

• func GetBit(b byte, idx int) byte
• func Hash(bs []byte) uint64
• func Int16ToBinary(i int16) []byte
• func Int24ToBinary(i int32) []byte
• func Int32ToBinary(i int32) []byte
• func Int64ToBinary(i int64) []byte
• func Int8ToBinary(i int8) []byte
• func SearchFirstGreaterEqual(ss SequentialSequence, data int64) (idx uint32, found bool)
• func String(data interface{}) string
• type CompareResult
  • func Compare(a, b interface{}) CompareResult
  • func (c CompareResult) IsBigger() bool
  • func (c CompareResult) IsEqual() bool
  • func (c CompareResult) IsSmall() bool
• type IntSequentialSequence
  • func (r IntSequentialSequence) GetData(idx uint32) int64
  • func (r IntSequentialSequence) Len() uint32
• type SequentialSequence

Functions

func GetBit

func GetBit(b byte, idx int) byte

idx: [0, 7]

func Hash

func Hash(bs []byte) uint64

func Int16ToBinary

func Int16ToBinary(i int16) []byte

func Int24ToBinary

func Int24ToBinary(i int32) []byte

func Int32ToBinary

func Int32ToBinary(i int32) []byte

func Int64ToBinary

func Int64ToBinary(i int64) []byte

func Int8ToBinary

func Int8ToBinary(i int8) []byte

func SearchFirstGreaterEqual

func SearchFirstGreaterEqual(ss SequentialSequence, data int64) (idx uint32, found bool)

搜索顺序序列中，第一个大于等于 data 的序号，返回是 [0, n] - 为空，返回 0 - 比所有值都小，返回 0 - 比所有值都大，返回 n - 至少比一个值大，但是又不是比所有的值都大，返回范围是 [1, n-1]

func String

func String(data interface{}) string

Types

type CompareResult

type CompareResult int

func Compare

func Compare(a, b interface{}) CompareResult

a > b, 1 a == b, 0 a < b, -1

func (CompareResult) IsBigger

func (c CompareResult) IsBigger() bool

func (CompareResult) IsEqual

func (c CompareResult) IsEqual() bool

func (CompareResult) IsSmall

func (c CompareResult) IsSmall() bool

type IntSequentialSequence

type IntSequentialSequence []int

func (IntSequentialSequence) GetData

func (r IntSequentialSequence) GetData(idx uint32) int64

func (IntSequentialSequence) Len

func (r IntSequentialSequence) Len() uint32

type SequentialSequence

type SequentialSequence interface {
	GetData(idx uint32) int64
	Len() uint32
}

顺序的序列 - 可以获取长度 - 可以根据偏移获取指定的值