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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2answers
32 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
29 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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vote
1answer
42 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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votes
0answers
36 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 ...
4
votes
1answer
40 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 ...
7
votes
1answer
82 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
votes
0answers
26 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
votes
1answer
43 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
53 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
votes
1answer
126 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 ...
3
votes
0answers
36 views
xkcd comics data provider
Please help me improving this code(golang), thanks!
Why I need built a API for xkcd
Can't get the data provided by xkcd directly in front-end(CORS).
So we can package the data to 10 comics per ...
3
votes
2answers
46 views
Optimized Int Reader
I am new in Golang, and decided to create a function that could cater to my needs of reading an integer from stdin. I need the function to be as efficient and fast ...
5
votes
2answers
54 views
Lexer for an experimental tiny language in Go
I am implementing a lexer for an experimental language by the name "Phoenix", the language supports four primary arithmetic expression for integers only (add, subtract, multiply, divide), variable ...
4
votes
1answer
55 views
Quicksort implementation in Go
Learning Go and trying to get a grip of the various concepts it uses. Following is my implementation of Quicksort (choosing last element as pivot). It takes the length of the array and the subsequent ...
3
votes
1answer
46 views
Create a new unique file
For debugging purposes I am storing requests into files. This code is supposed to create a new file for each request.
Somehow it doesn't look very nice, can it be improved? Additionally it would be ...
0
votes
0answers
22 views
Byte conversion in my Caesar's cipher
I was wondering if I am doing any useless conversions byte←→int, for example:
byte((int(ch-'A')+shift)%26 + 'A')
Converting ...
4
votes
1answer
83 views
Recursive Web Crawler in Go
This is probably my third Go application. It essentially takes one or two command line arguments of wikipedia articles and pulls every /wiki/ link that isn't a special page, memoizes them to avoid ...
1
vote
0answers
26 views
Formatting a CHANGES text file as HTML
I have a function which is used to convert text (a CHANGES file) into HTML for reading. The function is essentially line-based: if the line is of this type, do this thing; if some other type, do that ...
0
votes
0answers
244 views
Golang: reading and writing files in parallel
I am trying to read a big file line by line, inspect and cleanse each row and write to either of two output files depending on the outcome. I am using channels for this. I am still quite new to this ...
2
votes
0answers
57 views
Parse long string in Go
I'm sure that my server can work with better performance, but it's just a dream.
Parsing a very long strings is not so obvious task for me.
I have a server that handles a lot of clients requests and ...
2
votes
0answers
28 views
Emmental interpreter written in Go
Emmental is an interesting esoteric programming language based almost entirely on rewriting its interpreter. The language provides a very basic set of standard computing operators, and an ...
5
votes
0answers
49 views
Pomodoro timer in Go
My goal is to implement a simple pomodoro timer using Go: channels, goroutines. I'm newbie in Go world and have some misunderstanding about naming convention. I read a lot of Docker's code on GitHub ...
0
votes
0answers
16 views
Plotting savings rate in Go
I'm picking up Go, and wrote this simple script to parse a two csv files (spending.csv and savings.csv) to plot savings rate graph.
I would like to hear some generic comments on code readability, ...
5
votes
1answer
71 views
Alternate letters to UpperCase
As an exercise I repeated this Java question, but in Go: Convert string to mixed case
The objective is for every second letter to be converted to uppercase.
Go string processing is relatively new to ...
3
votes
0answers
149 views
Concurrent resizable ring buffer
I'm trying to find the fastest way to enqueue and dequeue items concurrently in Go.
There are some restrictions:
it needs to be unbounded
Memory allocation should be low
Multiple producers
(Single ...
2
votes
1answer
48 views
Uploading large videos using go
I am using the following function to upload videos (around 1 gb). It works properly.
My requirements are (these checks are being done in a different function using the mediainfo library):
check if ...
1
vote
1answer
223 views
Reading and processing a big CSV file
I am trying to write a script to read a CSV file containing 1 million domain names, look up these domain names and store the results in another CSV file. I am trying the following code, but the number ...
4
votes
1answer
34 views
recursive descent parser
Here is a non-predictive recursive descent parser I wrote for the following grammar:
...
3
votes
0answers
117 views
Golang Tour Web Crawler Exercise
In the last few days I've played around with Go a little and took the language tour. The last exercise (text here) requires you to crawl a graph that simulates a set of Web pages with links, using ...
5
votes
1answer
459 views
Encrypting strings in Golang
This is a an example application for testing some encryption and decryption functions in Golang. The functions encryptString(), ...
2
votes
0answers
32 views
Idiomatic abstract inheritance with Go
I am currently discovering Golang, and I try to implement some random variable generation functions similar to R functions.
To avoid code repetition, I'd like to use inheritance, which is quite ...
4
votes
2answers
114 views
Go lang Tour Webcrawler Exercise - Solution
I am new in Go and for study I have to hold a presentation about concurrency in Go. I think the Go lang Tour - Webcrawler exercise is a nice example to talk about that. Before I will do that, it would ...
6
votes
1answer
98 views
Summing chemical properties in a CSV stream
I have written my first program in go. It's rewritten from python.
Program takes csv file, emulates query ...
4
votes
0answers
141 views
ICMP ping program in Go
I've just written a ping application in Go. I'm proud of the logic, but I want some help to refactor it. The program has too much code in main, and pulling ...
5
votes
2answers
99 views
Port pinger command line tool
Checking if some port is up on the network is a very common task when working with remote services. A common way to check is using telnet, but I have two practical ...
3
votes
1answer
60 views
A scalable lock-free channel
Here's my lock-free channel impl lfchan,
I didn't want to copy/paste the code here since it is multiple files.
I'm trying to get an idea of what can be improved or if there are any bugs in it.
chan....
2
votes
1answer
70 views
Library to handle strings and numbers
I have created a pretty bad (just being honest) Golang library. I will take any and all advice, as long as it's helpful. Sorry it's so long. Also, I easily forget some things, so many functions in <...
4
votes
1answer
64 views
Golang Flood Fill
I started learning Go a few months ago and am trying to shake the rust off after a project took me out of the Go world for several weeks. I'd appreciate a code review on this flood fill algorithm I ...
3
votes
2answers
68 views
3
votes
2answers
127 views
Parse Numerals from a String in Golang
I recently tried my hand at writing Go code for a project I'm working on. In order to help myself get a better grasp I decided to write a simple yet somewhat practical program for parsing numeral ...
5
votes
3answers
163 views
Selection sort algorithm
I am just trying to use Go so I will be thankful for all remarks and corrections:
...
2
votes
1answer
177 views
Regular expression matching with string slice in Go
I have a slice of strings, and within each string contains multiple key=value formatted messages. I want to pull all the keys out of the strings so I can collect ...
2
votes
1answer
142 views
MongoDB CRUD operations for various types of data in Go
First of all I am a newbie in Go. I wrote a CRUD REST API that consists of handlers, a database layer and so on, and it contains a lot of code duplication. I see some patterns here, and I know how to ...
5
votes
1answer
88 views
Circuit Simulator
I'm trying to learn Golang from Java, and to do this, I wrote a basic circuit simulator with only two circuits. Is there anything I can do better to make it more idiomatic?
Simulator.go
...
1
vote
0answers
68 views
XOR 256 Block Encrypting and Decrypting
I am quite new to Go but have found it to be very useful for my use case (game server).
I have a routine that encrypts/decrypts the game packets which was written in C++ which can be seen here and ...
4
votes
3answers
84 views
Command called 'sprinkle'
I have a command called sprinkle. I'm not going to explain anything about it, because I want whoever that reviews the code to also tell me how much of the command ...
2
votes
2answers
148 views
Slice chunking in Go
I have a slice with ~2.1 million log message strings in it that I am parsing for regular expression matches. For any matches, I add it to a local slice and then return said slice.
...
-1
votes
1answer
35 views
Listings Manager
I am trying to learn to code using Dependency Injection and Inversion of Control in Go.
Please consider the following code. I am basically creating an interface ...
6
votes
3answers
137 views
Selection sort algorithm with increasing/decreasing sort options
I am running through some traditional algorithms in Go, and I was hoping to get feedback on efficiency and optimization.
Below is a basic selection sort algorithm that takes a parameter to dictate ...
1
vote
1answer
347 views
Executing periodic tasks
I am writing a code in Golang to execute a periodic function (every 2 second). According to documentation and an example I have written two programs. Can anybody tell which one is better? Also, is ...
