74,464 questions
Score of -2
1 answer
179 views
How to redirect a runtime fatal error to a logger?
In a Go program I got this error message:
fatal error: concurrent map writes
The message is shown in the terminal window of VS Code. But in my log there is nothing, which make sense because log....
- reputation score 1509
Score of 2
2 answers
248 views
How can I implement Java-like enums in Go?
Unlike Go's iota-based enums, Java enums are singleton objects. Each enum constant is a unique instance that can carry additional state and behavior, while also providing name(), ordinal(), values(), ...
- reputation score 21372
Score of 1
1 answer
182 views
Supabase Go: invalid character 'B' looking for beginning of value
I am working on a web crawler using Go and Supabase. This section of code throws an error when the length of the newLinks slice is above a certain number -- I haven't been able to determine what that ...
- reputation score 137
Score of 4
0 answers
170 views
I have an fs.FS, and use WalkDir. How can I get the "real" full path to an entry it finds?
In the past I've used the version of WalkDir that is not based on fs.FS, but I recently tried changing to the fs.FS-based one so that I could more cleanly do unit testing. But now I feel like I'm not ...
- reputation score 1281
Advice
0
votes
3
replies
189
views
How do I make web interactive maps with GO and React?
I am making pet-project with Go and React. I want to make web app, that for start, shows your location on a interactive world map. How should I make app logic with Go and React, so it would be ...
- reputation score 11
Advice
0
votes
4
replies
247
views
How can I check whether a string contains only digits in Go?
In Python, I can use the str.isdigit() method to check whether a string contains only numeric characters.
For example:
"12345".isdigit() # True
"123a".isdigit() # False
&...
- reputation score 1
Score of 1
0 answers
65 views
Chromedp initialization fails on warmup with "chrome failed to start" in Windows
package browser
import (
"context"
"log"
"os"
"os/exec"
"time"
"sync"
"path/filepath"
"...
- reputation score 39
Score of 2
1 answer
116 views
How to convert to a different type depending on architecture?
I am trying to fix the compilation of file overlay/tun_freebsd.go in module github.com/slackhq/nebula on armv7 FreeBSD. This file uses the syscall.Iovec structure, which is defined as
type Iovec ...
- reputation score 95183
Score of 1
1 answer
181 views
Goroutines leaking after context cancellation in fan-out/fan-in worker pool
I have a fan-out/fan-in worker pool that's supposed to stop all workers when the context is cancelled, but under heavy load with short timeouts, the goroutine count keeps climbing and never recovers.
...
- reputation score 3477
Advice
0
votes
3
replies
207
views
httpclient and (decorating) middleware in golang
I am trying to grasp (and sofar failing) to exactly grasp how the following code example works. It wraps (decorates) a standard http.client with 2 middleware functions (Logger and BasicAuth) that are ...
- reputation score 61
Tooling
0
votes
0
replies
120
views
How to watch files in Go with debouncing and glob pattern support?
When using fsnotify directly in Go, saving a single file triggers 4 to 5 raw events per save. For example saving a file in VSCode produces WRITE, CHMOD, WRITE, RENAME and CREATE events all from one ...
- reputation score 1
Score of 1
1 answer
154 views
Error when running a .exe Go program if I add a line break in the import
I'm running into a strange error when running the .exe that I built from a simple Go script I'm making, when I try to run the .exe it gives the following error and deletes the .exe file:
Translation: ...
- reputation score 47
Score of -1
1 answer
105 views
Compile code from executed command in code
I'm developing a hacking system that involves compiling hacking scripts to be injected in a CTF server. My goal is to compile each script from executing go build from Go code because the CTF server ...
- reputation score 361
Score of 2
1 answer
97 views
Gotk4 NewMessageDialog doesn't take the message_format argument
I use github.com/diamondburned/gotk4/pkg/gtk/v4. I'd like to create a modal dialog, like this:
dialog := gtk.NewMessageDialog(
&window.Window,
gtk.DialogModal|gtk.DialogDestroyWithParent,
...
- reputation score 106
Score of -3
1 answer
147 views
The correct way to save the first error of multiple goroutines using a mutex
I'm writing a function that gets student grades in parallel goroutines and returns their arithmetic mean at the end. If at least one student has an error, the function should return the first error ...
- reputation score 1
