go

问题 I'm trying to build a go shared library with a function that returns a slice. How can I use the slice from C code ? package main import "C" type T struct { A C.int B *C.char } //export Test func Test() []T { arr := make([]T, 0) arr = append(arr, T{C.int(1), C.CString("a")}) arr = append(arr, T{C.int(2), C.CString("abc")}) return arr } func main() {} go build -o lib.so -buildmode=c-shared main.go I now have a lib.so and a lib.h What would be the C code to print the values of the array ?

问题 I have a simple program written in Golang. It's an API. So inside the project folder, there's a folder named cmd containing my main package (used to initialise the app and defines the endpoints for the API). There's also a folder named after my program, containing multiple files from a package also named after my program. This package serves as the model to do all the necessary queries and contains all the types I have defined. I also created a folder called test . It contains all my test

问题 I have a simple program written in Golang. It's an API. So inside the project folder, there's a folder named cmd containing my main package (used to initialise the app and defines the endpoints for the API). There's also a folder named after my program, containing multiple files from a package also named after my program. This package serves as the model to do all the necessary queries and contains all the types I have defined. I also created a folder called test . It contains all my test

问题 I'm trying to build a go project in a docker container that relies on private submodules. I was hoping that --mount=type=ssh would pass my ssh credentials to the container and it'd work. Currently I can build locally with just make the GOPRIVATE variable set and the git config update. Here is my relevant Dockerfile currently # syntax = docker/dockerfile:experimental FROM golang:1.14.3-alpine AS build RUN apk add --no-cache git \ openssh-client \ ca-certificates WORKDIR /src ENV GIT_TERMINAL

问题 TL;DR Is there a way to deploy App Engine modules in parallel? I've built a go application using Google's App Engine SDK for Go. This application defines multiple modules. These modules are self-contained, and do not require any sort of dependency across other modules. When I attempt to deploy the modules to the Google Cloud, I can't help but notice that the modules are uploaded sequentially. This would be fine if deployment was relatively quick, but each module requires it's own redundant

问题 Task at hand is to bind a socket specifically to address 1.0.0.2:520 (assigned to eth2), then read multicast UDP packets addressed to 224.0.0.9:520. I am trying the code below, based on https://godoc.org/golang.org/x/net/ipv4 Unfortunately, result is this debbuging message is never reached: log.Printf("udpReader: recv %d bytes from %s to %s on %s", n, cm.Src, cm.Dst, ifname) I know eth2 is receiving the desired packets because I have this packet sniffer running on it: sudo tcpdump -n -i eth2

问题 Task at hand is to bind a socket specifically to address 1.0.0.2:520 (assigned to eth2), then read multicast UDP packets addressed to 224.0.0.9:520. I am trying the code below, based on https://godoc.org/golang.org/x/net/ipv4 Unfortunately, result is this debbuging message is never reached: log.Printf("udpReader: recv %d bytes from %s to %s on %s", n, cm.Src, cm.Dst, ifname) I know eth2 is receiving the desired packets because I have this packet sniffer running on it: sudo tcpdump -n -i eth2

问题 I'm writing a program in the Go language, and I have a simple problem: I have some goroutines in my program and channels with which goroutines use to communicate. From time to time I would like to check what is inside the channels. How could I achieve that without interrupting the goroutines' work? Do channels have any function to print their contents? Or should I somehow copy them? var shelf chan int = make(chan int, 5) go Depot(shelf) go Shop(shelf) var input string fmt.Scanln(&input) if

问题 I'm writing a program in the Go language, and I have a simple problem: I have some goroutines in my program and channels with which goroutines use to communicate. From time to time I would like to check what is inside the channels. How could I achieve that without interrupting the goroutines' work? Do channels have any function to print their contents? Or should I somehow copy them? var shelf chan int = make(chan int, 5) go Depot(shelf) go Shop(shelf) var input string fmt.Scanln(&input) if

问题 I'm a new Go programmer (From Java) and I would like to reproduce a generic way which is esay to use in Java. I want to create some function which allow me to do an Unmarshal on a JSON string in order to avoid code duplicity. This is my current code which is not working : type myStruct1 struct { id string name string } func (obj myStruct1) toString() string { var result bytes.Buffer result.WriteString("id : ") result.WriteString(obj.id) result.WriteString("\n") result.WriteString("name : ")