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Go get downloads and builds source code. It is not meant to execute arbitrary code. When cgo is enabled, the build step during “go get” invokes the host C compiler, gcc or clang, adding compiler flags specified in the Go source files. Both gcc and clang support a plugin mechanism in which a shared-library plugin is loaded into the compiler, as directed by compiler flags. This means that a Go packa
Here is a tiny Go program: package main import "fmt" func main() { var i, j int s := "word" i = j + 1 if s[i:j + 1] == "no" { fmt.Println("oops") } m := make(map[string]int) m["a" + "b"] = 5 s = "a" + "b" } Notice the two "j + 1" and two "a" + "b" expressions. Here is what gofmt test.go produces: package main import "fmt" func main() { var i, j int s := "word" i = j + 1 if s[i:j+1] == "no" { fmt.P
In our experience, missing network timeouts are one of the first sources of resiliency bugs in server applications. Unfortunately, these bugs are rare to experience during development and are not very easy to write tests for. As a result, we often see components hanging because somewhere in a dependency three layers down someone forgot to add an explicit timeout to a network connection/request/cal
This greatly improves the latency of starting a child process when the Go process is using a lot of memory. Even though the kernel uses copy-on-write, preparation for that can take up to several 100ms under certain conditions. All other goroutines are suspended while starting a subprocess so this latency directly affects total throughput. With CLONE_VM the child process shares the same memory with
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