Questions tagged [go]
Go, also called golang, is an open source programming language initially developed at Google. It is a statically-typed language with syntax loosely derived from that of C, adding automatic memory management, type safety, some dynamic-typing capabilities, additional built-in types such as variable-length arrays and key-value maps, and a large standard library.
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why would one use the "Functional Options" pattern in go?
I just learned about the Functional Options pattern in golang.
what are the benefits of using it over just allowing to pass a config struct and just overriding the default values provided in the ...
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Repository and Service Interfaces in an Accounting Software in Go with Uncle Bob's Clean Architecture
I'm trying to get hands-on experience with Uncle Bob's Clean Architecture in Go, but I'm running into some issues. Also, I'm not yet familiar with all of Go's idioms.
For testing purposes, I'm ...
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Does it ever make sense to use more concurrent processes than processor cores?
I've got some process in Go. Here's an example counting lines in text, though the question is meant to be far more general than this particular example:
func lineCount(s string) int {
count := 0
...
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Why do "checked exceptions", i.e., "value-or-error return values", work well in Rust and Go but not in Java?
Java has "checked exceptions", which force the caller of the method to either handle an exception or to rethrow it, e.g.
// requires ParseException to be handled or rethrown
int i = ...
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golang: pattern for handling message queues? Are named functions anti-idiomatic somehow?
Had a discussion today in how to implement services that work with messages coming in from event queues. We call these services processors. One of us argues for using several functions, while the ...
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Seeking a Third Opinion on Kafka Consumer Implementation and Architectural Disagreements
I've been at my current job for about 4-5 months, mainly working with Go, and I have no prior experience with Kafka. Before this, my background was in JavaScript, Node.js, React, etc. I recently got a ...
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Go, Error Handling, and Big Text Files - express error semantics in types
The title Go, Error Handling, and Big Text Files is a blog post from Wesley Aptekar-Cassels from 2021. In this blog post he reports about a problem he faced parsing long text files. He tried
scanner :=...
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How to handle different json response for the same api rest endpoint and different http status
I have an endpoint similar to GET ../produtcs/123 where 123 stands for an ID. The REST service response
with either status 200 and a json object A {"deliveryData": {"status": 200, ...
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Should Golang 'private' methods need unit tests?
I'm relatively new to Go but I come from a C#/OOP background where unit testing private methods isn't something that's generally done. I currently have a senior developer telling me it's "bad ...
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(How) can the circle-ellipse problem be solved by using composition rather than inheritance?
I was reading about composition over inheritance and came across a question about solving the Circle-Ellipse Problem in Object-Oriented Programming. This kind of problem is often used as an example of ...
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Go’s answer to c10k problem
I have few questions on the go's answer to c10K problem. How is an event loop different from the network poller described in this blog?
I see a striking similarity between waiting threads and waiting ...
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Is there any logical reason to "store" just one object file (.o) into archival file (.a)?
As far as I understand (not much), the archival .a file is just, roughly speaking, the collection/batch of object .o files. It's like a library of compiled code that can be cached and which can be ...
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Making side effects explicit even in non-pure functions
I try to have as many pure functions as possible, but if I can't, I at least try to make the side effects as explicit as possible.
Here is an example (in Go)
type State struct {
count int
}
func (...
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design pattern to avoid deadlock with mutex in golang
What would the appropriate design pattern to avoid deadlock when several functions use the same mutex ?
It is quite easy to forget what method uses the lock and so it happens that you call a function ...
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Is a common library a good idea?
I've always thought that a "common library" was a good idea. By that I mean a library that contains the common functionality that is often needed by a few different applications. It results in less ...
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