Category "go"

How do I print a 2-Dimensional array as a grid in Golang?

The 2D Array I am trying to print as a board Note: I am a complete novice at using Go and need this for a final project. I am making an attempt to make the game

How initialize the result of groupArray function of the ClickHouse to the array

In my Go application, I make a request to the ClickHouse database via clickhouse-go package. This query which I make return always only one record and it's an a

How to broadcast in gRPC from server to client?

I'm creating a small chat application in gRPC right now and I've run into the issue where if a user wants to connect to the gRPC server as a client, I'd like to

Scan from Postgres into struct with pointers

What would be the benefit of using a struct like below with pointers instead of a struct without pointers when scanning from database? type User struct {

JSON single value parsing

In python you can take a json object and grab a specific item from it without declaring a struct, saving to a struct then obtaining the value like in Go. Is the

How to merge multiple strings and int into a single string

I am a newbie in Go. I can't find any official docs showing how to merge multiple strings into a new string. What I'm expecting: Input: "key:", "value", "

How to pass multiple data to Go template?

I want to pass two data objects to Go Template. One is a MongoDB query result and other is an integer array. MongoDB Query:- var results []User sess, db := Ge

Validating configurations files with viper

I was looking for a configuration parser for go and https://github.com/spf13/viper seems to come highly recommended. I am very surprised to find that configura

Why is go build doing nothing?

I'm running into a bizarre problem at work. I have a project. In this project are two packages, each in its own folder. Each folder contains various .go files

Find address of constant in go

We have written one program by which we try to find an address of a constant. Is it possible to do it like that? package main func main() { const k =

Using .env files to set environment variables in Windows

I am working on a set of projects that use .env files for configuration, where each .env file exports a number of environment variables. The files are setup lik

malformed module path "xxxx/xxxx/uuid" missing dot in first path element when migrating from GOPATH based dep to go mod

$ go version 1.13.3 I have a folder structure as follows: GOPATH +---src +--- my-api-server +--- my-auth-server +--- main.g

Static global variables in Go

I am new in Go language and I need some help. I have declared a global variable but the problem is that it does not keep its value. It would be solved with a st

Checking equality of interface{}

I am searching a []interface{} slice for a given interface{} value: var v interface{} for i := 0; i < len(A); i++ { if (A[i] == v) { fmt.Println("Gotc

traefik.go: command traefik error: failed to eval New: undefined: xxx

I am trying to build a Traefik plugin and test it in local mode based on https://github.com/traefik/plugindemo#local-mode Right now this plugin does nothing and

traefik.go: command traefik error: failed to eval New: undefined: xxx

I am trying to build a Traefik plugin and test it in local mode based on https://github.com/traefik/plugindemo#local-mode Right now this plugin does nothing and

Private embedded struct when importing a struct from another package

I have a project which relies on a struct imported from another package, which I will call TheirEntity. In the example below, I (ahem) embed TheirEntity in MyE

How to remove all contents of a directory using Golang?

I'm new to Go and can't seem to find a way to delete all the contents of a directory when I don't know the contents. I've tried: os.RemoveAll("/tmp/*") os.Rem

Couldn't start dlv dap

When I launch in VSCode dlv dap debug, I get this message: Couldn't start dlv dap: Error:timed out while waiting for DAP server to start I already have launch

tls: no renegotiation error on HTTP request

I'm trying to make a simple HTTP request in Go, after directly following the guides I keep getting the same error: local error: tls: no renegotiation I don't