// AnyToStr 任意类型数据转stringfuncAnyToStr(iinterface{})(string,error){ifi==nil{return"",nil}v:=reflect.ValueOf(i)ifv.Kind()==reflect.Ptr{ifv.IsNil(){return"",nil}v=v.Elem()}switchv.Kind(){casereflect.String:returnv.String(),nilcasereflect.Int,reflect.Int8,reflect.Int16,reflect....
IntArray[]int StringArray[]string}dataMap:=map[string]string{"int_value":"1","string_value":"str","int_array":"[1,2,3]","string_array":"[\"1\",\"2\",\"3\"]",}config:=TestValue{}ifvalue,ok:=dataMap["int_value"];ok{config.IntValue,_=datautil.TransToInt64(value)}ifva...
size_t ncopy(char *dst, char *src, size_t n) { int i = 0; while (n-- && (*dst++ = *src++)) { i++; } return i; } char *join(char **s, size_t l, char *sep) { char *r = (char *)0; int n = 0, i, j; switch (l) { case 0: r = (char *)malloc(sizeo...
prog.go:8: cannot convert "abcde" (type string) to type [5]uint8 直接用copy(t.f1,"abcde")也是不行的。。因为copy的第一个参数必须是slice, 方案1:利用f1[:],注意,这里f1实际上是一个fixed的array,而f1[:]是一个slice packagemainimport"fmt"typeT1struct{ f1 [5]bytef2int}funcmain(){ t :...
sevp.signo=_SIGPROF// 设置signal类型为SIGPROFsevp.sigev_notify_thread_id=int32(mp.procid)// 设置signal通知给线程procidret:=timer_create(_CLOCK_THREAD_CPUTIME_ID,&sevp,&timerid)// 创建定时器...ret=timer_settime(timerid,0,spec,nil)// 启动定时器...} ...
publicclassMain{publicstaticvoidmain(String[] args){int[] data = {1,2,3,4,5}; int[] squared = Arrays.stream(data).map(x -> x * x).toArray();intsum = Arrays.stream(data).sum(); System.out.println("Squared: "+ Arrays.toString(squared)...
// []byte to string s2 := string(b) 强转换 通过unsafe 和 reflect 包,可以实现另外一种转换方式,我们将之称为强转换(也常常被人称作黑魔法)。 func String2Bytes(s string) []byte { sh := (*reflect.StringHeader)(unsafe.Pointer(&s)) ...
typedef int32 intptr; typedef int32 intgo; // Go's int typedef uint32 uintgo; // Go's uint #endif /* * defined types */ typedef uint8 bool; typedef uint8 byte; int8、uint8、int16、uint16、int32、uint32、int64、uint64、float32、float64分别对应于C的类型,这个只要有C基础就很容易...
typeslicestruct{arrayunsafe.Pointerlenintcapint} array是底层数组的指针,len表示长度,cap表示容量。对于[]byte来说,array指向的就是byte数组。 string 关于string类型,在go标准库builtin中有如下说明: // string is the set of all strings of 8-bit bytes, conventionally but not// necessarily representing UT...
field.Int32("id").SchemaType(map[string]string{ dialect.MySQL:"int(10)UNSIGNED",// Override MySQL.}).NonNegative().Unique(), field.String("email").SchemaType(map[string]string{ dialect.MySQL:"varchar(50)",// Override MySQL.}), ...