This is a creation in Article, where the information may have evolved or changed.
Functions in the Value.go
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Func Append (S Value, x ... Value) value
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Func Appendslice (S, t value) value
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Func Indirect (v value) value
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Func Makechan (typ Type, buffer int) Value
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Func makefunc (Typ Type, fn func (args []value) (Results []value)) Value
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Func makemap (Typ Type) Value
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Func makeslice (Typ Type, len, Cap int) Value
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Func New (Typ Type) Value
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Func NewAt (Typ Type, p unsafe. Pointer) Value
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Func ValueOf (i interface{}) Value
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Func Zero (Typ Type) Value
Method of the value structure
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ADDR () Value
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typically used to get a pointer to a struct field or a slice element in order to call a method, the receiver is required.
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BOOL () bool
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returns the underlying value, which can cause panic if the kind of V is not bool
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Bytes () []byte
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returns the underlying value, which can cause panic if the underlying value of V is not a byte slice
B: = []byte{' A ', ' B '}fmt. Println (reflect. ValueOf (b). Bytes ())
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CANADDR () bool
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Check to see if V is addressable
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Canset () bool
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Check if the value can be set, only addressable can be set
B: = 555p:=reflect. ValueOf (&b) V: = P.elem () //Reflection object P is not addressable, but does not want to set P, (actually) is *p. To get the content that P points to, call the Elem method on the value, point indirectly from the pointer, and then save the result of the reflection value called VV. Setint (666) fmt. Println (b)
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Call (in []value) []value
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the value of the reflection function. and call
Func Test (a string) string {return A}func main () {a: = "sssssss" args: = []reflect. Value{reflect. ValueOf (a)}c: = reflect. ValueOf (Test). Call (args) fmt. Println (c)}
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Callslice (in []value) []value
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Ibid
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Close ()
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close the channel, and if it's not Chan, panic.
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Complex () complex128
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returns the underlying value, if the value is not a complex number, generates a panic
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Elem () Value
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returns the value contained in V, which is used for addressing operations when setting values
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Field (i int) Value
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returns the value of an indexed field in a structure
Type A struct {a intb Bytec String}func main () {a: = A{}fmt. Println (reflect. ValueOf (a). Field (0). Int ())}
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Fieldbyindex (Index []int) Value
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ditto, but. provided is a slice
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Fieldbyname (name string) Value
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Find By field name
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Fieldbynamefunc (Match func (string) bool) Value
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Find by Function name
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Float () float64
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returns the underlying value, if the value is not a float, generates a panic
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Index (i int) Value
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If kind is not an array or sliece, the poor student panics and returns the element as value
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Int () Int64
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returns the underlying value, if the value is not an int, generates a panic
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Caninterface () bool
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returns True if the interface can be used
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Interface () (I interface{})
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returns the current value of V as interface{}
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Interfacedata () [2]uintptr
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If kind is not an interface, it can cause panic
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Isnil () bool
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returns True if V is a nil
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IsValid () bool
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returns True if V represents a value
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Kind () Kind
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returns the type of V
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Len () int
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returns the length of V
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Mapindex (key value) value
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if it is a map, the value whose key value is reflected by key
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Mapkeys () []value
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return all keys of map
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Method (i int) Value
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reflect structure values of a method by index
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Nummethod () int
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number of statistical structural methods
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Methodbyname (name string) Value
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the value of the reflection method is based on the method name
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Numfield () int
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number of fields reflecting a structure
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Overflowcomplex (x complex128) bool
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covering complex numbers
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Overflowfloat (x float64) bool
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overriding floating-point numbers
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OverflowFloat32 (x float64) bool
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Overflowint (x Int64) bool
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Overflowuint (x UInt64) bool
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Pointer () uintptr
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reflects the value of a pointer. Returns the integer value of a pointer
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RECV () (x Value, OK bool)
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for Channel
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Send (x Value)
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for Channel
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Set (x Value)
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if v can be set, set a value of V
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Setbool (x bool)
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if v can be set and is bool, set a value of V
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SetBytes (x []byte)
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Setcomplex (x complex128)
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SetFloat (x float64)
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Setint (x Int64)
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Setlen (n int)
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Setmapindex (Key, Val Value)
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Setuint (x UInt64)
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Setpointer (x unsafe. Pointer)
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SetString (x String)
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Slice (Beg, end int) Value
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The return value if the underlying is slice.
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String () string
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if Dicheng is a character channeling, the return character is
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TRYRECV () (x Value, OK bool)
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for Channel, accept
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Trysend (x Value) bool
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for channel, send
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Type () type
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return type
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Uint () UInt64
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If the Dicheng is a uint, the uint is returned.
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UNSAFEADDR () uintptr
