🇺🇦 Go for two :)

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Collections what's new in Go 1.22:

- slices.Concat https://blog.carlana.net/post/2024/golang-slices-concat/
- reflect.TypeFor https://blog.carlana.net/post/2024/golang-reflect-type-for/
- https://pkg.go.dev/cmp#Or
- https://pkg.go.dev/net/http@master#FileServerFS
- https://pkg.go.dev/database/sql#Null

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🇺🇦 Go for two :)

proposal: reflect: add TypeAssert likely accepted 🎉 ')

https://github.com/golang/go/issues/62121

GitHub

proposal: reflect: add TypeAssert · Issue #62121 · golang/go

Consider the following benchmark: func Benchmark(b *testing.B) { v := reflect.ValueOf(new(time.Time)).Elem() b.ReportAllocs() for i := 0; i < b.N; i++ { _ = v.Interface().(time.Time) } } This cu...

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2.05K viewsedited 08:41

🇺🇦 Go for two :)

TIL: a % 128 = 0 is the same as a & 127 = 0

'Which is a faster operation since it just requires doing the AND and not the whole division and remainder comparison' @jesusvazquezp

from https://github.com/prometheus/prometheus/pull/14118#pullrequestreview-2068077407

GitHub

Check context every 128 labels instead of 100 by colega · Pull Request #14118 · prometheus/prometheus

Follow up on #14096
As promised, I bring a benchmark, which shows a very small improvement if context is checked every 128 iterations of label instead of every 100.
It's much easier for a compu...

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2.07K views14:43

🇺🇦 Go for two :)

How do you track code coverage for OSS projects?

codecov seems very flaky, (will provide some details in thread)

wdyt about https://github.com/vladopajic/go-test-coverage?tab=readme-ov-file

GitHub

GitHub - vladopajic/go-test-coverage: go-test-coverage is a tool designed to report issues when test coverage falls below a specified…

go-test-coverage is a tool designed to report issues when test coverage falls below a specified threshold - vladopajic/go-test-coverage

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2.11K views09:13

🇺🇦 Go for two :)

https://tip.golang.org/doc/go1.23#iterators uhhhh 🙃🙃🙃🙃

tip.golang.org

Go 1.23 Release Notes - The Go Programming Language

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1.58K views08:09

🇺🇦 Go for two :)

For all GO haters :) https://juli1.substack.com/p/why-i-fell-in-love-with-go

Nice quote and summary:
>Technologies like JavaScript or Go are like a good burger: it’s an option that the majority understand and choose regularly. It may not be the most elegant option, but it does the job and allows us to focus on problems that matter.

Substack

Why I fell in love with Go

When I was still young in my career, I was obsessed with niche-languages mentioned in big stories on Hackernews.

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🇺🇦 Go for two :)

What do you think if I start posting not only about Golang, but some related topics like k8s/containers?

Anonymous Poll

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247 voters1.72K views09:21

🇺🇦 Go for two :)

_4chan := make(chan chan chan chan int)

😅😅😅

https://www.dolthub.com/blog/2024-08-23-the-4-chan-go-programmer/

Dolthub

The 4-chan Go programmer

A very silly concurrency exercise in using Go channels that send channels that send channels that send channels.

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1.91K views18:02

🇺🇦 Go for two :)

Old but still worth to read about why one shouldn;t defer Close() on writable files:

https://www.joeshaw.org/dont-defer-close-on-writable-files/

joe shaw

Don't defer Close() on writable files

It'll bite you some day

1.54K views07:51

🇺🇦 Go for two :)

Some pitfalls about generating Kubernetes Custom Resources with `controller-gen` over the years, and how to do more rigid validation and defaulting with it:

https://ahmet.im/blog/crd-generation-pitfalls/

Ahmet Alp Balkan

Kubernetes CRD generation pitfalls

A quick code search query reveals at least 7,000 Kubernetes Custom Resource Definitions in the open source corpus,1 most of which are likely generated with controller-gen —a tool that turns Go structs with comments-based markers into Kubernetes CRD...

1.94K views07:51

🇺🇦 Go for two :)

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🇺🇦 Go for two :)

Providing context to cancellations in Go 1.20 with the new context WithCause API

https://josephwoodward.co.uk/2023/01/context-cancellation-cause-with-cancel-cause

and proposal https://github.com/golang/go/issues/51365

Joseph Woodward's Blog

Providing context to cancellations in Go 1.20 with the new context WithCause API

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🇺🇦 Go for two :)

Dont forget to share your feedback about developing with Go ✍️

https://go.dev/blog/survey2024-h2

go.dev

Share your feedback about developing with Go - The Go Programming Language

Help shape the future of Go by sharing your thoughts via the Go Developer Survey

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🇺🇦 Go for two :)

TIL: strings.Split returns [""] if s does not contain sep and sep is not empty 😅

package main

import (
  "fmt"
  "strings"
)

func main() {
  fmt.Printf("%q\n", strings.Split("", ","))
}

Split returns a slice of length 1 whose only element is s:

[""]

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2.64K views17:58

🇺🇦 Go for two :)

it's really sad :(
https://github.com/golangci/golangci-lint/issues/5300#issuecomment-2615552467

GitHub

🪩 It's time to create a v2 🚀 · Issue #5300 · golangci/golangci-lint

There are at least 6 years since the idea of a v2 is here, we should pass this step now. ImportantThe focus will be on structural configuration changes and default values changes only (and removing...

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2.17K views09:21

🇺🇦 Go for two :)

After releasing go1.24, we can manage tools as dependencies!

Here is very good step by step article about how to do it https://www.alexedwards.net/blog/how-to-manage-tool-dependencies-in-go-1.24-plus

Also it includes example how to add tools to seperate go.mod file (TIL!)

www.alexedwards.net

How to manage tool dependencies in Go 1.24+ - Alex Edwards

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1.99K views08:36