于是自己重新写了一个Contains方法,可以支持 slice,array,map等类型 package main import ("errors" "fmt" "reflect")//判断obj是否在target中,target支持的类型arrary,slice,mapfunc Contain(obj interface{}, target interface{}) (bool, error) { targetValue :=reflect.ValueOf(target)switchreflect.TypeOf(ta...
type slice struct { array unsafe.Pointer // 指向底层数组的指针lenint// 切片的长度capint// 切片的容量} Golang 官方文档声明：函数参数传参只有值传递一种方式。值传递方式会在调用函数时将实际参数拷贝一份传递到函数中，slice 参数被传递到函数中时，其 array、len 以及 cap 都被复制了一份，因此函数...
func (v Value) Type() Type; value中有type信息 To modify a reflection object, the value must be settable. v.SetFloat(7.1) 如果是pointer有func (v Value) Elem() Value; returns the value that the interface v contains or that the pointer v points to 参考 unsafe runtime select 相关 代码语...
type readOnly struct { m map[interface{}]*entry amended bool // true if the dirty map contains some key not in m. } type entry struct { p unsafe.Pointer // *interface{} } type Map struct { mu Mutex read atomic.Value // readOnly数据 dirty map[interface{}]*entry misses int } ...
amended bool // true if the dirty map contains some key not in m. } type entry struct { p unsafe.Pointer // *interface{} } type Map struct { mu Mutex read atomic.Value // readOnly数据 dirty map[interface{}]*entry misses int ...
The data is arranged // into an array of buckets. Each bucket contains up to // 8 key/value pairs. The low-order bits of the hash are // used to select a bucket. Each bucket contains a few // high-order bits of each hash to distinguish the entries // within a single bucket. ...
array unsafe.Pointer// 指向底层数组的指针 lenint// 切片的长度 capint// 切片的容量 } Golang 官方文档声明:函数参数传参只有值传递一种方式。值传递方式会在调用函数时将实际参数拷贝一份传递到函数中,slice 参数被传递到函数中时,其 array、len 以及 cap 都被复制了一份,因此函数中 slice 和实参 slice ...
// Only shade the pointers in old.array since we know the destination slice to // only contains nil pointers because it has been cleared during alloc. // 只对old.array中的指针进行阴影处理,因为我们知道目标切片只包含零指针,因为它在分配过程中已被清除。
终于到函数了!因为Go汇编语言中,可以也建议通过Go语言来定义全局变量,那么剩下的也就是函数了。只有掌握了汇编函数的基本用法,才能真正算是Go汇编语言入门。本章将简单讨论Go汇编中函数的定义和用法。 基本语法 函数标识符通过TEXT汇编指令定义,表示该行开始的指令定义在TEXT内存段。...
slice := array[2:4] //只看头(从哪里切),不看尾,即顾头不顾尾... fmt.Println(cap(sli)) //10 fmt.Println(cap(slice)) //8 } Go 1.2 adds new syntax to allow a slicing operation to specify the capacity as well as the length. A second colon introduces the capacity value, which mus...