lib

Documentation

Index

• Variables
• func Apply(f func(int) int, c <-chan int) <-chan int
• func CSVParser(input string) []string
• func ContextWithSignals(ctx context.Context) context.Context
• func DashParser(input string) []string
• func Euclid(p, q image.Point) float64
• func GetInput(year, day int, sessionCookie string) (r string, err error)
• func InputFloats(input string, parser func(string) []string) [][]float64
• func InputInts(input string, parser func(string) []string) [][]int
• func Max(a, b int) int
• func Min(a, b int) int
• func Neighbors4(p image.Point) (r []image.Point)
• func Neighbors8(p image.Point) (r []image.Point)
• func NumberParser(input string) []string
• func ParseInput(input string, parser func(string) []string) [][]string
• func Reduce(f func(int, int) int, c <-chan int) (r int)
• func Sign(a int) int
• func Taxi(p, q image.Point) float64
• func TrimSpace(input []string) (r []string)
• func UDLR(p, q image.Point) int
• type Dim
  • func (n Dim) Index(p image.Point) int
  • func (n Dim) Point(i int) image.Point

Variables

var Diagnals = []image.Point{
	image.Point{1, 1},
	image.Point{1, -1},
	image.Point{-1, -1},
	image.Point{-1, 1},
}

var Directions = []image.Point{
	image.Point{0, 1},
	image.Point{0, -1},
	image.Point{-1, 0},
	image.Point{1, 0},
}

var Inputs []string

All puzzle inputs stored as an array of UTF-8 strings.

var NumberRE = regexp.MustCompile(`[-+]?\d*\.?\d*`)

Functions

func Apply

func Apply(f func(int) int, c <-chan int) <-chan int

func CSVParser

func CSVParser(input string) []string

CSVParser ...

func ContextWithSignals

func ContextWithSignals(ctx context.Context) context.Context

func DashParser

func DashParser(input string) []string

DashParser ...

func Euclid

func Euclid(p, q image.Point) float64

func GetInput

func GetInput(year, day int, sessionCookie string) (r string, err error)

GetInput returns the puzzle input for the given day.

func InputFloats

func InputFloats(input string, parser func(string) []string) [][]float64

Returns the input as a two-dimensional array of float64.

func InputInts

func InputInts(input string, parser func(string) []string) [][]int

Returns the input as a two-dimensional array of int.

func Max

func Max(a, b int) int

func Min

func Min(a, b int) int

func Neighbors4

func Neighbors4(p image.Point) (r []image.Point)

Returns the neighbors up, down, left, and right of P.

func Neighbors8

func Neighbors8(p image.Point) (r []image.Point)

Returns the neighbors UDLR of P and the diagnals.

func NumberParser

func NumberParser(input string) []string

NumberParser ...

func ParseInput

func ParseInput(input string, parser func(string) []string) [][]string

Parses each line of the input with the given parser function.

func Reduce

func Reduce(f func(int, int) int, c <-chan int) (r int)

func Sign

func Sign(a int) int

func Taxi

func Taxi(p, q image.Point) float64

func TrimSpace

func TrimSpace(input []string) (r []string)

Trimmer ...

func UDLR

func UDLR(p, q image.Point) int

Returns 1, 2, 3, or 4 if q is the up, down, left, or right neighbor of P, or 0 otherwise.

Types

type Dim

type Dim int

func (Dim) Index

func (n Dim) Index(p image.Point) int

func (Dim) Point

func (n Dim) Point(i int) image.Point