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type Node struct { value int next *Node } func main() { var head *Node // 使用鏈表添加元素 head = &Node{value: 1} cur := head for i := 2; i <= 10; i++ { cur.next = &Node{value: i} cur = cur.next } // 遍歷鏈表 cur = head for cur != nil { fmt.Println(cur.value) cur = cur.next } }
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func process() { // 創(chuàng)建一個大對象 data := make([]byte, 1024*1024*100) // 分配100MB的內(nèi)存 // 處理data // 使用完后立即釋放data data = nil }
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type Buffer struct { data []byte } var pool = sync.Pool{ New: func() interface{} { return &Buffer{data: make([]byte, 1024)} }, } func GetBuffer() *Buffer { return pool.Get().(*Buffer) } func PutBuffer(buf *Buffer) { buf.data = buf.data[:0] pool.Put(buf) } func main() { buf := GetBuffer() // 使用buf PutBuffer(buf) }
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type A struct { B *B } type B struct { A *A } func main() { a := &A{} b := &B{} a.B = b b.A = a // 斷開循環(huán)引用 a.B = nil b.A = nil }
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???? ??? ?? ?? ???? ???? ??? ????????? Go Language ??? ?? Goland? ??? ? ?? ???? ??? ?? ?? ??? ?? ???? ...

CentOS ??? ?? PostgreSQL ?????? ??? ???? ??? ?? ??? ??? ??? CentOS ????? PostgreSQL ?????? ???? ?????? ??? ??? ???? ??? ?? ??? ??? ???? ??? ? ??? ?????. 1. PostgreSQL ?? ?? ??? PostgreSQL?? ?? ? ?? ????? ?? ??? ??? ??? ?? ? ?? ?????. PG_STAT_ACTIVITY : ?? ??? ? ?? ? ?? ???????. PG_STAT_STATEMENTS : SQL ? ??? ???? ?? ?? ?? ??? ??????. PG_STAT_DATABASE : ???? ???, ?? ??? ?? ?????? ?? ??? ?????.

goistrongchoiceforprojectsneedingsimplicity, performance, and concurrency, butitmaylackinadvancedfeaturesandecosystemmaturity.1) go'ssyntaxissimpleandeasytolearn, go'ssyntaxissimpleandeasytolearn, theadtofewerbugsandmoremaintainablecode, theitlacksfeaturecomecemememecememememecememememememememememecemememememecemememecemememecemememecemecemecode

theinitfunctioningoare? ?? thecommonusecases : 1) loadingConfigurationFiles? eprogramStarts, 2) ??? GlobalVaribles, ? 3) runningpre-checksorvalidationsforeprogramProeceeds

Apache Service MPM ??? ???? ??? ???? ????? ???? ????? ??? ? ????. 1. ?? ?? ??, 2. ???? ??? ?? MPM ?? ??, 3. ??? ??? ???, 4. ???? ???, 5. ??? ????? ???? ?? ??? ??????.

grointerfacesaremethodsignatures thattypesmustimplement, modularCode? ?? polymorphism, modularCode.theyareimply? ????, ??? ortoflexeApisandDecoupling, butrequeRecarefulusetoavoidRuntimeErrorsAndeAntorsAntafeTeAfer.

Go Language? GO ???? SM4 ? SM2? ??? ? ?? ??? ?????. ? ??? Go Language? ???? GO Language? ??? ? SM2 ????? ??? ? ?? ?? ????? ???? Java? ??? ????? ??? ??? ?????.

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