fr-xiaoli

package main

import "sort"

type Event struct {
    pos int
    eType int // 1 for start, -1 for end
}

type SortEvent []Event

fr-xiaoli

Images

Build a Docker image and tag it using the Dockerfile in the current folder

$ docker build -t {my_tag_name} --build-arg SSH_KEY="`cat ~/.ssh/id_rsa`" --no-cache .

List images

$ docker image ls

fr-xiaoli

package main

import (
	"fmt"
	"golang.org/x/tour/tree"
)

// Walk walks the tree t sending all values
// from the tree to the channel ch.
func Walk(t *tree.Tree, ch chan int) {

fr-xiaoli

package main

import (
	"golang.org/x/tour/pic"
	"image"
	"image/color"
)

type Image struct{ 
	w int

fr-xiaoli

package main

import (
	"io"
	"os"
	"strings"
)

type rot13Reader struct {
	r io.Reader

fr-xiaoli

package main

import "golang.org/x/tour/reader"

type MyReader struct{}

func (MyReader) Read(b []byte) (int, error) {
	for i := 0; i < len(b); i++ {
		b[i] = 'A'
	}

fr-xiaoli

package main

import (
	"fmt"
)

type ErrNegativeSqrt float64

func (e ErrNegativeSqrt) Error() string {
	return fmt.Sprintf("cannot Sqrt negative number: %v", float64(e))

fr-xiaoli

package main

import (
	"fmt"
)

func Sqrt(x float64) (z float64) {
	z = x
	for i := 0; i < 10; i++ {
		z -= (z*z - x) / (2*z)

fr-xiaoli

package main

import (
	"golang.org/x/tour/wc"
	"strings"
)

func WordCount(s string) (m map[string]int) {
	m = make(map[string]int)
	ws := strings.Fields(s)

fr-xiaoli

package main

import "fmt"

type IPAddr [4]byte

// TODO: Add a "String() string" method to IPAddr.

func (a IPAddr) String() string {
	return fmt.Sprintf("%d.%d.%d.%d", a[0], a[1], a[2], a[3])