fcolumn

Documentation

Index

• func Doc() string
• func GenerateDoc() (*bytes.Buffer, error)
• func GenerateFilters() (*bytes.Buffer, error)
• type Column
  • func New(d []float64) Column
  • func NewConst(val float64, count int) Column
  • func (c Column) Aggregate(indices []index.Int, fn interface{}) (column.Column, error)
  • func (c Column) AppendByteStringAt(buf []byte, i uint32) []byte
  • func (c Column) Apply1(fn interface{}, ix index.Int) (interface{}, error)
  • func (c Column) Apply2(fn interface{}, s2 column.Column, ix index.Int) (column.Column, error)
  • func (c Column) ByteSize() int
  • func (c Column) Comparable(reverse, equalNull bool) column.Comparable
  • func (c Column) DataType() types.DataType
  • func (c Column) Equals(index index.Int, other column.Column, otherIndex index.Int) bool
  • func (c Column) Filter(index index.Int, comparator interface{}, comparatee interface{}, ...) error
  • func (c Column) FunctionType() types.FunctionType
  • func (c Column) Len() int
  • func (c Column) String() string
  • func (c Column) StringAt(i uint32, naRep string) string
  • func (c Column) Subset(index index.Int) column.Column
  • func (c Column) View(ix index.Int) View
• type Comparable
  • func (c Comparable) Compare(i, j uint32) column.CompareResult
  • func (c Comparable) HashBytes(i uint32, buf *hash.Murm32)
• type View
  • func (v View) ItemAt(i int) float64
  • func (v View) Len() int
  • func (v View) Slice() []float64

Functions

func Doc

func Doc() string

func GenerateDoc

func GenerateDoc() (*bytes.Buffer, error)

func GenerateFilters

func GenerateFilters() (*bytes.Buffer, error)

Types

type Column

type Column struct {
	// contains filtered or unexported fields
}

func New

func New(d []float64) Column

func NewConst

func NewConst(val float64, count int) Column

func (Column) Aggregate

func (c Column) Aggregate(indices []index.Int, fn interface{}) (column.Column, error)

func (Column) AppendByteStringAt

func (c Column) AppendByteStringAt(buf []byte, i uint32) []byte

func (Column) Apply1

func (c Column) Apply1(fn interface{}, ix index.Int) (interface{}, error)

Apply single argument function. The result may be a column of a different type than the current column.

func (Column) Apply2

func (c Column) Apply2(fn interface{}, s2 column.Column, ix index.Int) (column.Column, error)

Apply double argument function to two columns. Both columns must have the same type. The resulting column will have the same type as this column.

func (Column) ByteSize

func (c Column) ByteSize() int

func (Column) Comparable

func (c Column) Comparable(reverse, equalNull bool) column.Comparable

func (Column) DataType

func (c Column) DataType() types.DataType

func (Column) Equals

func (c Column) Equals(index index.Int, other column.Column, otherIndex index.Int) bool

func (Column) Filter

func (c Column) Filter(index index.Int, comparator interface{}, comparatee interface{}, bIndex index.Bool) error

func (Column) FunctionType

func (c Column) FunctionType() types.FunctionType

func (Column) Len

func (c Column) Len() int

func (Column) String

func (c Column) String() string

func (Column) StringAt

func (c Column) StringAt(i uint32, naRep string) string

func (Column) Subset

func (c Column) Subset(index index.Int) column.Column

func (Column) View

func (c Column) View(ix index.Int) View

type Comparable

type Comparable struct {
	// contains filtered or unexported fields
}

func (Comparable) Compare

func (c Comparable) Compare(i, j uint32) column.CompareResult

func (Comparable) HashBytes

func (c Comparable) HashBytes(i uint32, buf *hash.Murm32)

type View

type View struct {
	// contains filtered or unexported fields
}

View is a view into a column that allows access to individual elements by index.

func (View) ItemAt

func (v View) ItemAt(i int) float64

ItemAt returns the value at position i.

func (View) Len

func (v View) Len() int

Len returns the column length.

func (View) Slice

func (v View) Slice() []float64

Slice returns a slice containing a copy of the column data.