Weimin Liu 39Er

## golang_defer.go
package main

import (
	"log"
	"time"
)

func main() {
	bigSlowOperation()
}

## CallConcurrentWithContext.go
package main

import (
	"context"
	"fmt"
	"github.com/pkg/errors"
	"reflect"
	"sync"
	"time"
)

## AsyncFuncWithTimeout.go
package main

import (
	"context"
	"fmt"
	"github.com/pkg/errors"
	"time"
)

var (

## etcdclient.go
package main

import (
	"time"

	"fmt"

	"context"

	"strconv"

## many_senders_many_recievers.go
package main

import (
	"fmt"
	"math/rand"
	"sync"
	"time"
)

const (

## timeout.go
package concurrency

import (
	"fmt"
	"time"
)

func ChanTimeout() {
	ch := make(chan int)
	chClose := make(chan bool)

## Makefile
# Hello, and welcome to makefile basics.
#
# You will learn why `make` is so great, and why, despite its "weird" syntax,
# it is actually a highly expressive, efficient, and powerful way to build
# programs.
#
# Once you're done here, go to
# http://www.gnu.org/software/make/manual/make.html
# to learn SOOOO much more.
	package main

	import (
	"log"
	"time"
	)

	func main() {
	bigSlowOperation()
	}
	package main

	import (
	"context"
	"fmt"
	"github.com/pkg/errors"
	"reflect"
	"sync"
	"time"
	)
	package concurrency

	import (
	"fmt"
	"time"
	)

	func ChanTimeout() {
	ch := make(chan int)
	chClose := make(chan bool)
	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.