func main() {
var wg sync.WaitGroup
wg.Add(3)
go func() {
fmt.Println("1")
wg.Done()
}()
go func() {
time.Sleep(100 * time.Millisecond)
fmt.Println("2")
wg.Done()
}()
go func() {
time.Sleep(200 * time.Millisecond)
fmt.Println("3")
wg.Done()
}()
wg.Wait()
}
var wg sync.WaitGroup
wg.Add(3)
go func() {
fmt.Println("1")
wg.Done()
}()
go func() {
time.Sleep(100 * time.Millisecond)
fmt.Println("2")
wg.Done()
}()
go func() {
time.Sleep(200 * time.Millisecond)
fmt.Println("3")
wg.Done()
}()
wg.Wait()
}
2019-08-30
func main() {
for i := 0; i < 10; i++ {
defer fmt.Printf("%d ", func(i int) int{
fmt.Printf("%d ", fibonacci(i))
return fibonacci(i)
}(i))
}
}
for i := 0; i < 10; i++ {
defer fmt.Printf("%d ", func(i int) int{
fmt.Printf("%d ", fibonacci(i))
return fibonacci(i)
}(i))
}
}
2019-08-29
length := (2)
capacity := (4)
length = (7)
e2 := (0)
e3 := (8)
e4 := (11)
capacity := (4)
length = (7)
e2 := (0)
e3 := (8)
e4 := (11)
2019-08-27
聽(tīng)著很專業(yè)的樣子，但是為啥我沒(méi)看到想學(xué)的東西，在此留言，有可能是最后一節(jié)課了……
2019-08-02
最簡(jiǎn)單的方法：
package main
import (
"fmt"
"time"
)
func main() {
go func() {
fmt.Println("1")
}()
time.Sleep(100 * time.Millisecond)
go func() {
fmt.Println("2")
}()
time.Sleep(100 * time.Millisecond)
go func() {
fmt.Println("3")
}()
time.Sleep(100 * time.Millisecond)
}
package main
import (
"fmt"
"time"
)
func main() {
go func() {
fmt.Println("1")
}()
time.Sleep(100 * time.Millisecond)
go func() {
fmt.Println("2")
}()
time.Sleep(100 * time.Millisecond)
go func() {
fmt.Println("3")
}()
time.Sleep(100 * time.Millisecond)
}
2019-07-26
package main
import "fmt"
func main() {
ch2 := make(chan string, 1)
go func() {
ch2 <- ("已到達(dá)！")
}()
var value string = "數(shù)據(jù)"
value = value + (<- ch2)
fmt.Println(value)
}
import "fmt"
func main() {
ch2 := make(chan string, 1)
go func() {
ch2 <- ("已到達(dá)！")
}()
var value string = "數(shù)據(jù)"
value = value + (<- ch2)
fmt.Println(value)
}
2019-07-19
最新回答 / 精慕門(mén)728499
這個(gè)slice沒(méi)有設(shè)置上界，cap為2是根據(jù)底層數(shù)組的長(zhǎng)度來(lái)計(jì)算的
2019-07-13
最新回答 / qq_熊掌柜__0
想通了，因?yàn)榉旁诤竺娴脑?，panic拋出異常，不再執(zhí)行下面代碼。調(diào)用不了defer。所以必須放到前面。通過(guò)defer的特性最后執(zhí)行獲取到的異常
2019-07-12
復(fù)數(shù)類(lèi)型的值一般由浮點(diǎn)數(shù)表示的實(shí)數(shù)部分、加號(hào)“+”、浮點(diǎn)數(shù)表示的虛數(shù)部分
2019-07-03