Go 1.24's "tool" directive
Pin tool versions in Go 1.24 with the new 'tool' directive. Replace tools.go pattern with native go.mod support for project tooling.
Series
Cross-entropy and KL divergence
Cross-entropy is widely used in modern ML to compute the loss for classification tasks. This post is a brief overview of the math behind it and a related concept called Kullback-Leibler (KL) divergence. Information content of a single random event We'll start with a single event...
Bobcoin, blockchains, and cryptocurrency
How do cryptocurrencies actually work, though? Join Alice and Bob as they embark on designing a new digital ledger for secure “Bobcoin” transactions.
Capturing console output in Go tests
Ideally, every function that writes to the stdout probably should ask for a io.Writer and write to it instead. However, it’s common to encounter functions like this: func frobnicate() { fmt.Println("do something") } This would be easier to test if frobnicate wou...
Capturing console output in Go tests
Ideally, every function that writes to the stdout probably should ask for a io.Writer and write to it instead. However, it’s common to encounter functions like this: func frobnicate() { fmt.Println("do something") } This would be easier to test if frobnicate wou...
Capturing console output in Go tests
Test functions that write to stdout/stderr in Go by capturing output with os.Pipe. Learn patterns to avoid deadlocks in concurrent tests.
Automagically migrating `golangci-lint` configuration to v2 with Renovate
As mentioned in Using Renovate to manage updates to golangci-lint versions I very much recommend using Renovate to update your golangci-lint versions. With the release of golangci-lint v2 a couple of weeks ago, consumers need to perform a one-time migration of their configuration...
How much does a Go book author make?
#549 — April 9, 2025 Unsub | Web Version Go Weekly Faster Shuffling in Go with Batching — Put down that deck of cards.. ‘shuffling’ here refers to moving the contents of an array about. It is based on expensive random inte...
I'm on Fallthrough: APIs: Design Imperfectly, Improve Relentlessly
A couple of weeks ago, I joined the lovely Kris Brandow and Ian Wester-Lopshire on the Fallthrough podcast to talk some more about API design. As I mentioned in I'm on Fallthrough: An Exploration of APIs, Versioning, & HTTP this was a planned follow-up, as we didn't quite cha...