Category "go"

Go boltDB query using bolthold 3 conditions

So I had this question before and I had an answer below the question which worked, but I just realized that the query I came out with does not work as planned.

How to exclude coordinates which overflow matrix

The task is to write a function that returns all its neighbors for an element. Diagonal elements are not considered neighbors. In general, the problem is solved

Printing strings and characters as hexadecimal in Go

Why cyrillic strings in hexadecimal format differ from cyrillic chars in hexadecimal format? str := "Э" fmt.Printf("%x\n", str) //result d0ad str :

Reading a Config File in Android from a Golang Bind Service

I have a Golang program from which I have created a package using gomobile bind. It creates two files abcd.jar and abcd.aar. I have copied these 2 files to the

Unit Testing for pgxpool

I am looking to write unit tests for Go code that uses pgxpool to interact with a postgres database. Is there a test framework that will stand up a dummy or moc

Does copy() function more efficient than slice[start:end] operators? [duplicate]

My goal is to validate whether the tutorial given by w3schools is true, I use w3schools#Memory Efficinecy as reference. I quote from the tutor

AWS Route53 - Adding Simple Record

I am able to add "Weighted" A records for the AWS Route53 using the API, using [Weight: aws.Int64(weight)], it works great using the code below. But how

Error message "go: go.mod file not found in current directory or any parent directory; see 'go help modules'"

I just updated to the new version of Go - Go version 1.16.2 Linux/amd64 and am getting an error when I build a Hello, World! example: go: go.mod file not found

Heroku Go app crashes, version `GLIBC_2.32' not found, required by bin/main

So I have a very simple web app that just serves an html file right now, and my code works on my laptop, but not on heroku's servers. There are no errors while

Trouble with go get install for mcumgr

I am trying to install MCUMgr on MACos. Here is a link for mcumgr: https://docs.zephyrproject.org/latest/services/device_mgmt/mcumgr.html I install the Go Progr

How to get html element inside script

using go-colly how to get element inside script tag? ie: <script language="Javascript">jQuery( document ).ready(function() {jQuery("#table-hold").html('&l

Deadlock in book <The Go Programming Language>, how it would happen and why it happen?

There are several times in this book talk about deadlock regarding to incorrect usage of goroutine and channel, and I failed to grasp why the deadlock happen. F

Getting different output for slight variation in input for unicode.IsNumber() function in Go

Why does unicode.IsNumber(rune(truncfloat)) returns false some cases? For 55.3 output is true For 58.3 output is false Below is my code: package main import (

How to get parameters in cloudformation template to launch using Amazon Go SDK?

I am having trouble writing a script in Golang to launch a cloudformation template that has several parameters. I am new to both sdk and golang, so I am runnin

Can't connect to Go Server in Docker container

I am trying to run a an HTTP Server written in Golang inside of a docker container and I keep getting connection refused. Everything is being run inside of an U

SetCookie() couldn't set dot prefix for domain

package main import ( "time" "github.com/gin-gonic/gin" ) func main() { r := gin.Default() r.GET("/ping", func(c *gin.Context) { c.Se

How to see Go func len() Implementation in VS Code?

My goal is to see the logic behind func len() in Golang. I use VS Code for IDE. The problem is when I tried to do Go to Implementation, it returns No implementa

Unmarshal remaining JSON after performing custom unmarshalling

I have a JSON object That contains an implementation of an interface within it. I'm attempting to take that JSON and marshal it into a struct whilst creating th

In Go gin framework , how to get all url that I have registered in the router

I’m programming the role based access control with casbin. However ,the police need me to provide urls that the role has. The “v1” column in t

Add headers for each HTTP request using client

I know that I can add headers to each HTTP request manually using cli := &http.Client{} req, err := http.NewRequest("GET", "https://myhost", nil) req.Heade