Golang

Background: The Go Collections working group was formed in late 2025 with the purpose of bringing common collection data structures to the standard library, guided by the familiar Go principles of pragmatism and simplicity. Alphabetically by last name, the group … Read more

Maps sit on the hot path of almost every non-trivial Go program: they power request routing, cache lookups, deduplication sets, aggregation pipelines, and a lot of the glue code we barely notice until it gets slow. Because they are so … Read more

In this project, we need to overlay a looping short music track over a long voice soundtrack. The command to do this looks like this: func loopBackgroundMusic(voice io.Reader, music io.Reader, out io.Writer) error { bgPipe := Piper.CreatePipe(music) // — URL … Read more

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In February of this year, I announced that Dolt releases are now built as profile-guided optimized (pgo) binaries, levering this powerful feature of Golang 1.20 to increase Dolt’s read performance by 5.3%. Prior to my announcement, Zach, one of our … Read more

There are some common-sense restrictions on code that runs in the playground (and thus on executable examples running on pkg.go.dev). For example, there’s no networking available, and the amounts of CPU, memory, and execution time are limited to prevent abuse. … Read more

01. Introduction The usual slice syntax in Golang is a[low:high], which you are probably familiar with. There is also another slice syntax in the form of a[low:high:max], which takes three indexes instead of two. What does the 3rd index max … Read more