Poker

Poker is ported from the Python library worldveil/deuces.

Installation

Use go get to install Poker:

$ go get github.com/chehsunliu/poker

Usage

Support 5-, 6-, and 7-card evalutions:

package main

import (
	"fmt"

	"github.com/chehsunliu/poker"
)

func main() {
	deck := poker.NewDeck()
	hand := deck.Draw(7)
	fmt.Println(hand)

	rank := poker.Evaluate(hand)
	fmt.Println(rank)
	fmt.Println(poker.RankString(rank))
}

$ go run ./main.go
[Kd 4h Qh 3s 8s 5h Jd]
6695
High Card

$ go run ./main.go
[4c Qh Ad 9c 9s 3h 4d]
3062
Two Pair

$ go run ./main.go
[Jh Qd Kd Qs 7d As Qh]
1742
Three of a Kind

Performance

Compared with notnil/joker, Poker is 180x faster on 5-card evaluation, and drops to 50x faster on 7-card evaluation.

$ go test -bench=. -benchtime 5s
goos: darwin
goarch: amd64
pkg: github.com/chehsunliu/poker
BenchmarkFivePoker-4            20000000               280 ns/op
BenchmarkFiveJoker-4              100000             50769 ns/op
BenchmarkSixPoker-4              3000000              2428 ns/op
BenchmarkSixJoker-4                30000            272321 ns/op
BenchmarkSevenPoker-4             300000             20317 ns/op
BenchmarkSevenJoker-4               5000           1062044 ns/op
PASS
ok      github.com/chehsunliu/poker     43.996s