此外在fasthttp中还提出了一个解决方案,用于[]byte和string的高性能转换。直接看下源码: // b2s converts byte slice to a string without memory allocation. // See https://groups.google.com/forum/#!msg/Golang-Nuts/ENgbUzYvCuU/90yGx7GUAgAJ . // // Note it may break if string and/or slice...
此外在fasthttp中还提出了一个解决方案,用于[]byte和string的高性能转换。直接看下源码: // b2s converts byte slice to a string without memory allocation.// See https://groups.google.com/forum/#!msg/Golang-Nuts/ENgbUzYvCuU/90yGx7GUAgAJ ./// Note it may break if string and/or slice header...
msg/Golang-Nuts/ENgbUzYvCuU/90yGx7GUAgAJ ./// Note it may break if string and/or slice header will change// in the future go versions.funcb2s(b[]byte)string{/* #nosec G103 */return*(*string)(unsafe.Pointer(&b))}// s2b converts string to a byte slice without memory allocation....
1. Byte Array to String using Slice This is the easiest way to convert the byte array to string. We can pass the byte array to the string constructor with slicing. Let’s look at a simple example. 1 2 3 4 5 6 7 8 9 10
// BytesToString converts a byte slice to a string.funcStringToBytes(sstring)[]byte{x:=(*[2...
go 中string与[]byte的互换,相信每一位 gopher 都能立刻想到以下的转换方式,我们将之称为标准转换。 // string to []byte s1 := "hello" b := []byte(s1) // []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...
()bar", // you find the indices and convert the subslice to string. return "" } // 如果开启了竞态检测 -race if raceenabled { racereadrangepc(unsafe.Pointer(&b[0]), uintptr(l), getcallerpc(), funcPC(slicebytetostring)) } // 如果开启了memory sanitizer -msan if msanenabled { ...
将[]byte转为string,语法string([]byte)源码如下: funcslicebytetostring(buf*tmpBuf,b[]byte)string{ l:=len(b)ifl==0{//Turnsouttobearelativelycommoncase. //Considerthatyouwanttoparseoutdatabetweenparensinfoo()bar, //youfindtheindicesandconvertthesubslicetostring. return }ifraceenabledl0{ raceread...
因为string的指针指向的内容是不可以更改的,所以每更改一次字符串,就得重新分配一次内存,之前分配空间的还得由gc回收,这是导致string操作低效的根本原因。 string和[]byte的相互转换 将string转为[]byte,语法[]byte(string)源码如下: func stringtoslicebyte(buf *tmpBuf, sstring) []byte{varb []byteifbuf !
将[]byte转为string,语法string([]byte)源码如下: funcslicebytetostring(buf *tmpBuf, b []byte)string{ l :=len(b)ifl ==0{// Turns out to be a relatively common case.// Consider that you want to parse out data between parens in "foo()bar",// you find the indices and convert the...