funcmain(){vara int=3.0fmt.Printf("%v, %T",a,a)// 输出 3, intvarb int=3.14fmt.Printf("%T",b)// 报错 cannot use 3.14 (untyped float constant) as int value in variable declaration (truncated)} 不同数据类型变量之间不支持隐式转换 使底层数据类型相同也不可以进行隐式转换,比如int32和i...
func main() {var a int = 3.0fmt.Printf("%v, %T", a, a) // 输出 3, intvar b int = 3.14fmt.Printf("%T", b) // 报错 cannot use 3.14 (untyped float constant) as int value in variable declaration (truncated)}复制代码 不同数据类型变量之间不支持隐式转换 使底层数据类型相同也不可...
is float division) const d = 1 << 3.0 // d == 8 (untyped integer constant) const e = 1.0 << 3 // e == 8 (untyped integer constant) const f = int32(1) << 33 // illegal (constant 8589934592 overflows int32) const g = float64(2) >> 1 // illegal (float64(2) is a ...
funcmain(){fmt.Println(SumByInt(1.6,3.2))}funcSumByInt(a,bint)int{returna+b} 弱类型语言将自动转化并正常计算输出4.8,强类型语言对变量、数据类型的声明及其严格,编译都无法通过 # command-line-arguments.\fanxing.go:6:23:cannot use1.6(untypedfloatconstant)asintvalueinargument to SumByInt(truncated...
go:33:24: cannot use 2.54 (untyped float constant) as int value in argument to Sum (truncated) 因此,如果当golang开发者想开发类似实现两个float类型变量相加的功能,只能另写一个函数:func SumFloat(a, b float) float { return a + b } 或者写一个通用的Sum函数使用interface反射来判断:...
(untyped integer constant)const e=1.0<<3//e==8(untyped integer constant)const f=int32(1)<<33//illegal(constant8589934592overflows int32)const g=float64(2)>>1//illegal(float64(2)isa typed floating-point constant)const h="foo">"bar"//h==true(untyped boolean constant)const j=true//j...
The default type of an untyped constant is bool, rune, int, float64, complex128 or string respectively, depending on whether it is a boolean, rune, integer, floating-point, complex, or string constant. Implementation restriction: Although numeric constants have arbitrary precision in the language...
在函数Sum中,不仅要严格定义传入参数a和b的变量类型,而且返回值的类型也需要严格定义,所有你只能传入int类型进行调用: Sum(1, 2) // 3 1 如果传入其它类型的变量就会报错: fmt.Println(Sum(1.23,2.54));./main.go:33:18:cannot use1.23(untyped float constant)asintvalue in argument to Sum(truncated)....
which fails to compile: go/server/restapi/operations/get_api_logs_parameters.go:95:60: cannot use -9.223372036854776e+18 (untyped float constant -9.22337e+18) as int64 value in argument to validate.MinimumInt (truncated) go/server/restapi/operations/get_api_logs_parameters.go:99:60: cannot ...
Now, you might be wondering that I’m using terms likeintegerconstant,stringconstant, and I’m also saying that they are untyped. Well yes, the value1is an integer,4.5is a float, and"Hello"is a string. But they are just values. They are not given afixedtype yet, likeint32orfloat64...