Recent questions tagged go

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go - golang json marshal: how to omit empty nested struct

go playground As shown in the code above, one can use json:",omitempty" to omit certain fields in a struct to ... B string`json:",omitempty"` } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Does Golang support variadic function?

I wonder if there a way where I can define a function for unknown number of variables in Go. Something like ... Add for any number of inputs. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How does ServeHTTP work?

I am studying web development in Golang (Beginner) I came across some code I played around with and I'm not ... is happening in the code above. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Executing a Bash Script from Golang

I am trying to figure out a way to execute a script (.sh) file from Golang. I have found a couple of easy ... . Any ideas how to achieve this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Creating map with/without make

What exactly is the difference between var m = map[string]int{} and var m = make(map[string]int ... ? Are there performance considerations? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to access global variables

How do I access a variable that was declared/init in my main.go in a different .go package/file? ... file but keep getting StartTime undefined See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to return dynamic type struct in Golang?

I am using Golang Revel for some web project and I did like 12 projects in that so far. In all of them I ... then happy to return your answer :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Why is time.sleep required to run certain goroutines?

In the GO tutorial, we have this slide: Goroutines package main import ( "fmt" "time" ) func say(s ... that saves the goroutine from dying? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to stop json.Marshal from escaping < and >?

package main import "fmt" import "encoding/json" type Track struct { XmlRequest string `json:"xmlRequest"` } func main ... >XML</mirror></car>"} See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How does defer and named return value work?

I just started learning Go and I got confused with one example about using defer to change named return value in ... help me confirm, thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to traverse through XML data in Golang?

I have used xml.UnMarshal method to get a struct object but it has it's own limitations. I need a way ... traverse the child node deeper } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to get the realtime output for a shell command in golang?

I am trying to call shell command with os/exec in golang, that command will take some time, so I would like ... 100% how could I achieve this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Golang catch signals

I want to implement a "process wrapper" in Go. Basically what it will do, is launch a process (lets say a ... Go, any help would be appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - In golang how can I write the stdout of an exec.Cmd to a file?

I am trying to run a shell command, capture stdout and write that output to a file. However, I seem to be ... (writer, stdoutPipe) cmd.Wait() } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to pretty print variables

Is there something like Ruby's awesome_print in Go? For example in Ruby you could write: require 'ap' x = {a:1, ... found is Printf("%#v", x) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Can I have multiple GOPATH directories?

I set my GOPATH to /Users/me/dev/go and I have /Users/me/dev/go/src/client1 /Users/me/dev/go/src/ ... holds many different client's go projects. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - no new variables on left side of :=

What's happening here? package main import "fmt" func main() { myArray :=[...]int{12,14,26} ; ... values to an already declared variable. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Golang: pointer to function from string (function's name)

Is there any chance to get pointer to function from function's name, presented as string? This is needed for ... of metaprogramming, you know. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Any difference in using an empty interface or an empty struct as a map's value?

I am using this construct to simulate a set type MyType uint8 map[MyType]interface{} I then add in all my ... empty struct versus interface{}. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Dynamically call method on interface{} regardless of receiver type

I'm working on a templating system written in Go, which means it requires liberal use of the reflect ... by definition a reference object. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to unmarshal an escaped JSON string

I am using Sockjs with Go, but when the JavaScript client send json to the server it escapes it, and send's ... into Go value of type main.Msg See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - One-liner to transform []int into string

Basically I have []int{1, 2, 3}, I want a one-liner that transforms this into the string "1, 2, 3" (I ... only works if A is already []string. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Golang conditional compilation

I've got a trouble with conditional compilation in Go 1. Here is my test code. Is there anything I misunderstand ... declaration at ./main1.go:8 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Setting cookies with net/http

I'm trying to set cookies with Go's net/http package. I have: package main import "io" import " ... direction it would be greatly appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Gorilla mux custom middleware

I am using gorilla mux for manage routing. What I am missing is to integrate a middleware between every request ... can I prevent this scenario? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to add Authorization Header to Angular http request?

This is my first post. I've just started learning Go and Angular and I'm attempting to connect the angular ... 5000 Origin:http://localhost:4200 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Why does adding concurrency slow down this golang code?

I've got a bit of Go code that I've been tinkering with to answer a little curiosity of mine related ... functions provided by the package. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Reading an integer from standard input

How do I use the fmt.Scanf function in Go to get an integer input from the standard input? If this can't ... best way to read a single integer? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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