key

Documentation

Index

• type Key
  • func (k Key) Clone() Key
  • func (k Key) Cmp(another Key) int
  • func (k Key) HasPrefix(prefix Key) bool
  • func (k Key) Next() Key
  • func (k Key) PrefixNext() Key

Types

type Key

type Key []byte

Key represents high-level Key type.

func (Key) Clone

func (k Key) Clone() Key

Clone returns a copy of the Key.

func (Key) Cmp

func (k Key) Cmp(another Key) int

Cmp returns the comparison result of two keys. The result will be 0 if a==b, -1 if a < b, and +1 if a > b.

func (Key) HasPrefix

func (k Key) HasPrefix(prefix Key) bool

HasPrefix tests whether the Key begins with prefix.

func (Key) Next

func (k Key) Next() Key

Next returns the next key in byte-order.

func (Key) PrefixNext

func (k Key) PrefixNext() Key

PrefixNext returns the next prefix key.

Assume there are keys like:

rowkey1
rowkey1_column1
rowkey1_column2
rowKey2

If we seek 'rowkey1' Next, we will get 'rowkey1_column1'. If we seek 'rowkey1' PrefixNext, we will get 'rowkey2'.