I’m willing to create C++ STL in Go. Is there a way to create custom structs that implement bracket syntax for index accessing? Assume this is my array type: type Array[T any] struct { values []T } Is there any way I can add bracket syntax indexation instead of Array.At() or any other? I want… Read More Bracket syntax for custom struct types in Go

I am pretty new to Go and I am trying to find the best way to set up my db communication. Essentially I remember from my previous workplaces that in PHP you can create a class that represents a SQL table and when you need to insert data into your db you would create an… Read More Go structs that represent SQL tables

I was reading through the Tour of Go and tried to write a small program to check my understanding of channels and select. I was expecting the code snippet below to count down: "5, 4, 3, 2, 1, Blastoff!" However, the program just hangs after "1". Can someone explain what I’m doing wrong? package main… Read More Using channels for a countdown in Go

I need to format a Date.Time object which is a UTC string into the following format “dd/mm/yyyy HH:MM:SS”. I need to loop through an array of transactions and alter the StatusDateTime for each transaction in the array. I’ve tried the below while playing around with the format, but it does not alter the date format… Read More Date format in Golang

For Go 1.16, ioutil.ReadAll / ioutil.ReadFile / ioutil.ReadDir are deprecated. any new pakcages to use ? >Solution : ioutil.ReadAll -> io.ReadAll ioutil.ReadFile -> os.ReadFile ioutil.ReadDir -> os.ReadDir // others ioutil.NopCloser -> io.NopCloser ioutil.ReadDir -> os.ReadDir ioutil.TempDir -> os.MkdirTemp ioutil.TempFile -> os.CreateTemp ioutil.WriteFile -> os.WriteFile

I have the following program (simplified as much as possible): package main import "fmt" type Test struct { Str *string } func main() { arr := []string{"vanC", "vanD"} arr2 := make([]Test, 0) for _, element := range arr { fmt.Println(element, &element) arr2 = append(arr2, Test{ Str: &element, }) } fn(arr2) } func fn(arr2 []Test) {… Read More Passing pointer of string to a function leads to the wrong string being printed

I’ve defined the following struct in Go: type repoStars struct { name string owner string stars int } And I’ve created an array repoItems := []repoStars{} which has multiple items of the struct above. This is how repoItems looks like: I’m trying to return those items as a JSON response: w.Header().Set("Content-Type", "application/json") json.NewEncoder(w).Encode(repoItems) And it… Read More Go return struct as JSON in HTTP request

I’m studying Golang and I stopped by this and puzzled me. package main import "fmt" func main() { month := […]string{1: "Jan", 2: "Fab", 3: "March", 4: "April", 5: "May", 6: "June", 7: "July", 8: "Aug", 9: "Sep", 10: "Oct", 11: "Nov", 12: "Dec"} fmt.Println(cap(month)) summer := month[6:9] Q2 := month[4:7] fmt.Println(cap(Q2)) fmt.Println(len(Q2)) fmt.Println(cap(summer)) fmt.Println(len(summer))… Read More Slices return unexpected length

Does any one know if in Go I we have something like is ? I need to understand if a var. is map or interface. In Python I can do smt like this: map = list() print(map is list()) if map is list(): # do something In Go I tried to do the same: var… Read More How to check if var is map, slice or interface?

I’m new to Go and I try to build a Json-builder functionality to practice. My aim is to create a recursive library to build json. This is the warning I get for the "second" field. Unexpected newline in composite literal and here’s my attempt. I don’t see a mistake here: package main import ( "fmt"… Read More Unexpected newline in composite literal for a map[string]any