Go 1.1 Function Calls中介绍了函数调用在编译&汇编层面的是实现, 其中比较特别的是indirect call of func value. 新手在不知道这个点的情况下去看相关的汇编时很容易被卡住. 我们以如下代码为例子: //go:noinline func max(a, b int) int { if a > b { return a } return b } func main() { max(...
AI代码解释 // getCaller retrieves the name of the first non-logrus calling function func getCaller() \*runtime.Frame { // Restrict the lookback frames to avoid runaway lookups pcs := make([]uintptr, maximumCallerDepth) depth := runtime.Callers(minimumCallerDepth, pcs) frames := runti...
func myFunction(i int, arr []int) { fmt.Printf("in my_funciton - i=%p arr=%p\n", &i, &arr)}func main() { i := 30 arr := []int{66, 77} fmt.Printf("before calling - i=%p arr=%p\n", &i, &arr) myFunction(i, arr) fmt.Printf("after calling - i=%p arr=%p\n",...
func myFunction(i int, arr [2]int) { fmt.Printf("in my_funciton - i=(%d, %p) arr=(%v, %p)\n", i, &i, arr, &arr) } func main() { i := 30 arr := [2]int{66, 77} fmt.Printf("before calling - i=(%d, %p) arr=(%v, %p)\n", i, &i, arr, &arr) myFunction...
It is very useful for calling a function with name matching.So, is it possible to call a function by its name in Golang?As a static, compiled programming language, the answer is No … and YES!You can not do this in Golang:1 2 3 4 5 func foobar() { // bla...bla...bla......
=0&&(sp<gp.stack.lo||gp.stack.hi<sp){print("recover: ",hex(sp)," not in [",hex(gp.stack.lo),", ",hex(gp.stack.hi),"]\n")throw("bad recovery")}// Make the deferproc for this d return again,// this time returning 1. The calling function will// jump to the standard ...
cmd/internal/obj: generate stack maps in obj so we can better compact the morestack/body maps and reduce subtlety? cmd/compile,runtime: re-enable passing arguments togoin runtime (context) cmd/compile: always attachir.Functo functionir.Names (context) ...
库函数通常必须返回某种错误提示给主调(calling)函数。 在前面的章节中我们了解了 Go 检查和报告错误条件的惯有方式: 产生错误的函数会返回两个变量,一个值和一个错误码;如果后者是 nil 就是成功,非 nil 就是发生了错误。 为了防止发生错误时正在执行的函数(如果有必要的话甚至会是整个程序)被中止,在调用函数后...
are not initialized by growslice// (although for pointer-containing element types, they are zeroed). They// must be initialized by the caller.// Trailing entries [newLen, newCap) are zeroed./// growslice's odd calling convention makes the generated code that calls// this function simpler...
One of the functions I needed to call takes a pointer-to-pointer parameter (a bit like anoutparameter in C#). This is something I just couldn’t get to work from Go. My solution: handling the pointer-to-pointer in C and function resultstructreturning a pointer. ...