csvnewcol

Documentation

Index

• func CreateNewColumnExprs(newColString string, cols []string) ([][]Expression, error)
• func GenColumns(newcols [][]Expression, row []string) []string
• type Expression
  • func CreateExpressions(exprString string, cols []string) ([]Expression, error)
• type Reader
  • func NewReader(r csvReader, exprs [][]Expression) *Reader
  • func (r *Reader) Read() ([]string, error)

Functions

func CreateNewColumnExprs

func CreateNewColumnExprs(newColString string, cols []string) ([][]Expression, error)

CreateNewColumnExprs creates an a new cell (slice of expressions) for each semicolon separated item

func GenColumns

func GenColumns(newcols [][]Expression, row []string) []string

GenColumns will return newly generated columns from a 2d expression slice and a row

Types

type Expression

type Expression interface {
	// contains filtered or unexported methods
}

Expression allows generating a new column given a row

func CreateExpressions

func CreateExpressions(exprString string, cols []string) ([]Expression, error)

CreateExpressions creates a list of expressions based on a string and the header row (column names)

type Reader

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

Reader reads a CSV row that may have new columns

func NewReader

func NewReader(r csvReader, exprs [][]Expression) *Reader

NewReader creates a reader from a csvReader interface and expression list

func (*Reader) Read

func (r *Reader) Read() ([]string, error)

Read reads a line with the added columns