I am trying to write a unmarshal function for a custom type. Consider the below code (playground) package main import ( "encoding/json" "fmt" "strings" &...

I am playing around with the ERC20 token implemented in fabric-samples. I was wondering if it is possible to not only send tokens between users but have deployed chaincodes receive/hold/send tokens as ...

There is a struct: type struct { a map[string][]byte b map[string][]byte . . . } I want to create a map that will hold all the keys(str) and ...

The following excerpt is from https://go.dev/doc/effective_go We launch the pieces independently in a loop, one per CPU. They can complete in any order but it doesn't matter; we just count ...

Good afternoon. I am trying to solve a queue problem with radis stream. Task description: we need to implement a queue to store the data that we will send to the user's email. How it works: I have a ...

I'm using Ent with Pgx. The column created in Postgres is: used_at timestamp with time zone NOT NULL, The value in Postgres is saved without timezone (in UTC): 2022-06-30 22:49:03.970913+00 Using ...

Is there any way to build all the test files in a project located inside multiple packages into a single binary file? To build binary inside a single package, I could use go test -c. I need something ...

I'm trying to get this JSON file info into a multidimensional string var in GO: { "info": [ { "type": "general", "news": [ { ...

I have a mongodb container which i name e-learning and i have a docker image which should connect to the mongodb container to update my database but it's not working i get this error: Unknown, Last ...

I have a CLI client and server written in Go Currently, they are communicating via a socket connection and it's a server streaming connection Now I want to have an Nginx proxy between these two Is it ...

When I run the following command PRIVATE_CONFIG=ignore nohup geth --datadir node1 --nodiscover --verbosity 5 --networkid 31337 --raft --raftport 50001 --rpc --rpcaddr 0.0.0.0 --rpcport 22001 --rpcapi ...

I'm trying to build a web app with Jekyll and Go, where I use Go to embed the generated _site file from the Jekyll build & add some HTTP handlers with the conditions I need. remote: -----> ...

go version : 18.3 github.com/go-sql-driver/mysql v1.6.0 When Query string is db.Query("SELECT * FROM logs ORDER BY log_id DESC LIMIT 1,3 ") if the log_id == 8 b, _ := rawValue.([]byte) Below ...

My application is in Go. It talks to a PostGres database. I am using Go's Prepared SQL Statements to increase performance. While the application is running, I run the following SQL statement to modify ...

i have this code where i try to get the localhost ip 127.0.0.1 func (m *Repostory) HomeHandeler(w http.ResponseWriter, r *http.Request) { for name, values := ...

I currently have a distributor service and a worker service that communicate via SQS. The distributor searches for expired values in a postgresql database and sends them to SQS. The worker picks up ...

I have a variable decodedToken (type: struct), and I access one of its values called "Claims" through a type assertion: claims := decodedToken.Claims.(jwt.MapClaims) I then loop through the ...

I'm trying to add nodes to a linked list concurrently using channels and goroutines. I seem to be doing be something wrong, however. Here's what I've written so far. Currently, my print function is ...

data userId height curry 1 curry 2 kd 3 kd 4 james 2 input: userIds=[curry,kd,james] i want curry 2 kd 4 james 2 So, i want one record ...

I was referred to this question: Program recovered from panic does not exit as expected It works fine but it relies on knowing where the panic occurs in order to place the deferred function. My code ...

I opened an issue in creack/pty for this question, but I actually think it probably belongs here as it's probably more to do with my usage of the library than anything wrong with the library. I am ...

I have a GoLang middleware for exporting metrics for prometheus, which are then served from /metrics endpoint My question is where does the data received from /metrics endpoint come from? Does it come ...

I'm working with vSphere govmomi client to interact with vCenter. I'm having problem in unit testing the govmomi vapi/rest client. The sample code for creating rest client is: var insecure bool = true ...

I am using bigCache in Go for caching data. Is there anyway to configure it so that it never expires?

I want to know how to permanently delete associations in GORM. I tried all examples shown in the documentation but I cannot get associations to become permanently deleted. For example, I am confused ...

I have seen multiple applications write their data first to buffer, then writing that buffer to socket and not just directly to socket. I have two questions: Why is that? If writing straight to ...

I am new to jenkins and struggling to find out what the below is? The jenkins file for my project has contents similar to the below stage("Build and push"){ def projectImage = ...

WITH final AS ( SELECT 'a' AS gname, 'b' AS pname, 'c' AS name, 1 AS gid, 2 AS pid, 3 AS did, 3 AS inp UNION SELECT 'a1' AS gname, 'b1' AS pname, 'c1' AS name, 11 AS gid, 21 AS pid, 31 AS ...

I am using Avro library from here. One of the schema fields of Avro looks like this: [{"name":"Col_1", "type":["null",{"type":"bytes", "...

I tried the method from https://go.dev/doc/install and I keep getting "-bash: go: command not found". I tried https://gist.github.com/conoro/4fca191fad018b6e47922a21fab499ca but I dont know ...

Hi I have just started learning golang. I would to do following things using the code below:- Actions I want to do with my code :- Take input from user (let's say it is n) that will serve as the ...

package main import ( "bytes" "encoding/base64" "fmt" "io" "log" "os" ) func b(name string) { f, err := os....

I have a function that creates a new user, however the reccomended way to get the values of the user does not include the autogenerated values created by the database (id, created_at) type User struct ...

I have been using exec.CommandContext to run sudo commands in my Go packages, and it works. Nowadays, I am trying to add a timeout so that the command just terminates if it does not finish after the ...

I am relatively new to the packages Cobra and Logrus in Golang and there is one little thing I would to ask for help when it comes to integrating them. I am working on a new Golang Cobra CLI which ...

I am not fully familiar with golang patterns / best practices with respect to database connections. I am trying to implement a simple web service in go, using jackc/pgx connection pool. In a file (...

What's a subj parameter of a JetStream.PullSubscribe() method for? I observe following behavior: When a consumer is created without the FilterSubject configuration option, then no matter what I pass ...

I have a below struct where I have a nested map for CustomersIndex which allocates bunch of internal maps causing memory increase. I profiled it so I noticed this. I am trying to see if there is any ...

I'm writing a web app which generates a random string every time a page is requested. It's imperative that the string is different every time the page is loaded, but this isn't the case as the browser ...

i tried deploying my golang server to heroku automatically, and the server runs until the playground. i use gqlgen from graphql golang but when i try to run the query and i fetch data in playground, i ...

I try to save a slice of integers of a field. the field is type reflect.Value. I get the error: cannot use articles (variable of type []int64) as reflect.Value value in argument to field.Set. What can ...

i made a api server to store the details of students. here the json keys are StudentName RollNo Gender Branch when i send these values in post request , only Gender and branch values are storing. ...

I'm trying to run go tests inside a container and want the coverage file exported to the host volume. My solution works on macOS but fails on linux. my Dockerfile looks something like this: FROM ...

While reading the source code of Go program for dealing with program memory I found this snippet of code: f, err := p.openFile("mem") if err != nil { return nil, err } defer func() { _ = ...

I have a struct type Server struct { grpcServerPort int grpcServer *grpc.Server writer *kafka.Writer } this Server has lot of methods including - func NewServer(port int) *Server { ...

I have an interface type FooInterface interface { HasName() bool } It has a base implementation that I intend to use in other implementation of FooInterface type FooBoilerplate struct { ...

I need to find all students that belong to a school with a certain name. type School struct { gorm.Model Students []Student } type Student struct { gorm.Model name string SchoolID ...

I've been struggling with golang's lack of optional parameters, so I have been using the closest workaround: variadics. Even though I got it working, it is messy attempting to pass multiple variable ...

I'm trying to get a Bazel build working on my MacBook Pro M1 on Monterey, and I'm having a difficult time. When I try to build a docker image, I get go toolchain errors (with --...

I have a .webm file that contains only audio encoded in the OPUS codec (no video). I want to know how i can extract each individual OPUS frame from the file without decoding it into PCM and re-...