Go, commonly referred to as "golang", is a fast, statically typed, compiled language created by Google. The language was initially developed as an alternative to C++ for server infrastructure and has native support for concurrency.
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Print log error and save it to a file
I have created a simple custom logger to print the error log and save it to a file with specific location.
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1answer
47 views
Beginnings of Go web server with mongoDb
I am just learning how to use go and I'm a bit confused on how my code is supposed to be organised package wise.
Am I right to have the user package? I'm planning ...
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1answer
69 views
Concurrency and locking in a chat server
I've never done concurrent programming before, but I've written one using go channels and RWMutex, but I'm not sure if my approach is idiomatic. I feel like it could all use channels (Maybe).
The ...
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35 views
Using interface to decouple from database connection
I have an issue regarding unit testing for getting the response that created using http.HandleFunc(). This is about my approach to solve this problem.
I create ...
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1answer
27 views
Checking whether a shop record exists
I have a method to check if the Id exists in the data or not, for example:
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2answers
47 views
Benchmark of Perfect Numbers
I wrote a piece of code to benchmark the detection of perfect numbers up to 10000. The original code is here, in C:
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1answer
38 views
Slack App OAuth flow in golang
I'm working on a Slack app that uses Slash Commands. I've been looking for an excuse to learn Go, but the online tour was a little slow paced so I tried jumping in with this project.
I'm looking for ...
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1answer
35 views
How many of a particular item of clothing do I need?
I am learning Go and want to do things the go-way, please have a look this code suggest how to make it better Go.
This is a simulation to determine how items of a particular type of clothing you need....
3
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1answer
76 views
Parallel brute-force solution for Project Euler 4 (Largest palindrome product)
The pe4Concurrent.go file given below is my first attempt at writing a concurrent programme, pe4.go is a non-concurrent implementation of the same algorithm for comparison purposes.
The algorithm ...
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351 views
Making AES encryption in Go just a little easier
AES encryption in Go is already pretty simple, Gencrypt is a package that acts as a wrapper around Go's standard packages used for AES encryption to make it even more simple.
https://gitlab.com/...
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23 views
cryptography routine for stream data
I have code that was taken from a C++ project, I have implemented it in Go but with this line by line re-code comes a few non-optimized parts. Being an encryption routine for incoming and outgoing ...
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1answer
32 views
Retrieve Internet explorer proxy settings from the registry
I just re-wrote a library to easily retrieve the proxy settings of Internet Explorer (self answered SO question: http://stackoverflow.com/q/41764614/3207406).
Git repository
GoDoc (with an example)
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1answer
42 views
Strip a newline and add more text to a Go bytes.Buffer
I wrote a little timer middleware to append the request duration to the end of the log message returned by the excellent Gorilla Toolkit's CombinedLoggingHandler ...
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1answer
58 views
Game Data Client: Go based Game server
In my previous question I asked how could the Redis client be improved.
Here I will ask how can the Game data Client can be improved. Game Data client sits on top of Redis Client and uses datatypes ...
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1answer
75 views
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Golang nanny process starting child process
The idea here is that my executable can be started normally (in which case it runs my business logic), or it can be wrapped in a nanny process (which starts a child process to run the business logic, ...
5
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1answer
55 views
Basic linked list stack implementation with go
Here goes my first stack implementation with go
New to the go language and it's been ages since I implemented a stack
Would love to discuss the data structure implementation itself and how "goish" ...
3
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1answer
62 views
Golang WebSocket communication between server and app
I've written a simple application that captures frames from my webcam and streams the frames via a websocket.
The stream implementation I've come up with feels weird. Networking is not my strong suit....
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1answer
37 views
Codilty, binary gap get the highest gap
I have written a solution for the codility task which is Binary Gap.
finding the highest gap in Binary. for example 1041 is the input number and convert it to ...
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4answers
106 views
Vowel/consonant counter in Golang
To learn Go I decided to write a vowel/consonant counter. I really need tips/ideas on how I can improve my code.
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3
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1answer
29 views
Manipulating /etc/hosts file using Go
This is my first go at a Go program that's not a variation of "Hello {$name}". It's about twice as long as my previous Python implementation, and perhaps an order of magnitude messier.
The goal is to ...
4
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0answers
42 views
Encode object to JSON and encrypt with AES (with tests)
While the task at hand is relatively straightforward, it turned out AES in Go is a bit clunky so I was wondering if this seems right. Also, any tips on Go coding in general are more than welcome.
<...
2
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1answer
33 views
Go version of Advent of Code, day 5 - Dealing with runes
I tried to solve the Advent of Code quiz for day 5 in Go, since my brute force algorithm wasn't efficient in Ruby. I solved the first part of the quiz with the following Go code.
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2
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1answer
62 views
Benchmark switch, binary search and if-else
Just for curiosity I have done some benchmark for testing the best performance between switch, binary-search, and if-else statement.
here is the code :
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3
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1answer
59 views
Go fish game in Go
Based on this question, I have written my own implementation of the Go Fish game, with the following features:
Full trace of all actions that happen in the game
More than 2 players possible
Each of ...
3
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1answer
44 views
Random timestamp within last 3 relative years
I'm trying to generate a random time between now and 3 years ago. To my knowledge, Go doesn't have a random(min,max) feature in either ...
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0answers
153 views
Simple Golang TCP server
I've written an itty bitty tcp server, for educational purposes.
The program outputs a file if you input the correct hash (or whatever you set the environment variable to).
I've performed tests on ...
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2answers
42 views
Get reputation Badge from given score
I have written code that gets the reputation badge from given score like this:
I use an if-else statement here:
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4
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0answers
47 views
reusing Body in http.Requests (goproxy)
Goproxy is a Go package implementing an HTTP proxy.
I am using it to store requests from a client (eg: a web browser) for further processing.
In an ...
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3answers
2k views
Really fast Knight's Tour using concurrency and Goroutines
In less that 5 seconds on a normal PC, I found the answer in simple brute-force. Before I met Go, I didn't believe that it will be so easy to use all the power of the PC by using Go Goroutines for ...
3
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1answer
79 views
Diff for successive sorted slice
I wrote some code to determine the additions and deletions that happened to a sorted slice after each (sorted) update.
Git repository (includes some tests)
Godoc
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14
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1answer
217 views
How many days to Go?
Here's my first serious attempt at writing Go code. This program counts the number of days until a certain date and displays that in the system tray.
To do that, it first reads the target date from ...
3
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0answers
39 views
CLI app to download a .gitignore file
I have written a simple app that adds gitignore files to the current working directory - it does this by reading files hosted on GitHub and then saving them (...
3
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0answers
35 views
Sorting upcoming events listed in JSON
I've written my first program in GO, a command line tool that parses JSON containing events from a file or from STDIN and outputs the upcoming events in sorted order. Please critique it!
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3
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2answers
163 views
Print all lines of a text file containing the same duplicated word
I'm implementing my very first Go application and I would like to receive an hint on how to make a certain check faster.
I have a huge txt file in which each line ...
5
votes
1answer
48 views
Concurrent task pool
My use case is to dispatch multiple long-running tasks to execute concurrently. The expectation is that the tasks will be IO-bound (e.g. network requests), but importantly each task is different. This ...
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2answers
157 views
Watchdog in Golang
I am new to Go. I am trying to implement a simple watchdog. It calls a function once after a certain delay has elapsed; kicking it resets the delay. Kicking it after the function has already been ...
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1answer
84 views
“Images” exercise from A Tour of Go
The "Images" exercise in A Tour of Go asks for an implementation of image.Image. I wrote two solutions, one easy and one harder (just for practice in dealing with ...
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1answer
49 views
Binary trees exercise
I'm not sure about this code but it feels ugly to me. It is a solution to this.
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2answers
219 views
Image Cropping and Resizing
I am building a Go based image processing worker for my web application. I am trying to be idiomatic, but I am new to Go. Any feedback, is appreciated. This program uses bimg to generate 4 square ...
3
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2answers
70 views
Stack based non-recursive Fibonacci - Go implementation
The following function computes a the last element in a Fibonacci sequence in Go language.
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3
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0answers
51 views
Custom TCP protocol concurrent chat server
So the task was to first create a custom TCP protocol (namely ebl0) with certain parameters in its header and a number of methods to use with it (e.g. Login, Create, Join etc.). I'm not listing it ...
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1answer
46 views
Project Euler #1 in Go (counting multiples of 3 or 5 up to 1000)
I've been working on Project Euler, here was my solution for Problem #1. It gave me the proper answer, but it's egregiously slow. How can I implement this more efficiently? My math skills aren't top-...
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0answers
62 views
Manage Labels in a Gitlab Project
Background
This is the first (and only) Go program I've written so far.
My employer just formed a small team to make a prototype written in Go ready for production, so I (and everyone else on my ...
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1answer
45 views
Un-wrap lines in a text file
I have a function which takes a string representing a text file, joins lines which were wrapped, and returns a slice with the wrapped lines. I'm interested in ...
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1answer
107 views
Sum numbers input from terminal
The following Golang code accepts a sequence of numbers (any integer and float type) in the terminal, adds them, and prints the result (sum) to the terminal.
Actually in Golang you can't add ...
4
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0answers
29 views
Simple Web Analytics Logger
I've been learning Go for a few months and this is one of my first projects with it. It's an analytics beacon for my low-volume blog; it emits a tracking pixel and logs parameters from the browser to ...
3
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1answer
45 views
Event-triggering - Ready, On, Fire
I have implemented a kind of thing that does event triggering in Golang. This is open-sourced here. Review and suggestions appreciated.
First thing I am trying to implement is adding event listeners ...
5
votes
1answer
64 views
Brightness Web Server
This is the first real program I've written in Go so have at it! I wrote it because I use a tiling window manager that doesn't have any brightness control functionality (at least not that I know of).
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5
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1answer
210 views
Simple Go TCP server and client
I'm a Go (and programming in general) newbie and the task was to program a Go server that would accept incoming messages, take each line, reverse its order and case and send it back. Besides doing ...
