go anonymous function
发布时间:2020-12-16 18:03:29 所属栏目:大数据 来源:网络整理
导读:package main import "fmt" // function add func add(a,b int) int { return a + b } // 1 func testFunc1() { // function "add" to var "f1"// then "f1" is a functionf1 := add// type of f1 = func(int int) intfmt.Printf("type of f1 = %Tn",f1)//
package main import "fmt" // function add // 1 // function "add" to var "f1" // then "f1" is a function f1 := add // type of f1 = func(int int) int fmt.Printf("type of f1 = %Tn",f1) // call function "f1" // params are 2 and 5 sum := f1(2,5) // sum = 7 fmt.Printf("sum = %dn",sum) } // 2 // anonymous function to var "f1",then "f1" is a function f1 := func(a,b int) int { return a + b } // type of f1 = function(int,int) int fmt.Printf("type of f1 = %Tn",f1) // call function f1,params are 2 and 5 sum := f1(2,sum) } // 3 // the statement after "defer" will be pushed into stack first // so the value of var "i" will be "0" // defer i = 0 defer fmt.Printf("defer i = %dn",i) i = 100 // i = 100 fmt.Printf("i = %dn",i) return } // 4 // the anonymous function after "defer" will be pushed into stack first // but at this time,the statement in function will not be pushed into stack // so at this time the value of var "i" is not specific // the value of var // at the end the value of var "i" is 100 defer func() { fmt.Printf("defer i = %dn",i) }() i = 100 // i = 100 fmt.Printf("i = %dn",i) return } func main() {//testFunc1()//testFunc2()//testFunc3()testFunc4()} (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |