Testable Examples in Go - The Go Programming Language
Andrew Gerrand 7 May 2015 Introduction Godoc examples are snippets of Go code that are displayed as package documentation and that are verified by running them as tests. They can also be run by a user visiting the godoc web page for the package and clicking the associated “Run” button. Having executable documentation for a package guarantees that the information will not go out of date as the API
Errors are values - The Go Programming Language
Rob Pike 12 January 2015 A common point of discussion among Go programmers, especially those new to the language, is how to handle errors. The conversation often turns into a lament at the number of times the sequence if err != nil { return err } shows up. We recently scanned all the open source projects we could find and discovered that this snippet occurs only once per page or two, less often th
Generating code - The Go Programming Language
Rob Pike 22 December 2014 A property of universal computation—Turing completeness—is that a computer program can write a computer program. This is a powerful idea that is not appreciated as often as it might be, even though it happens frequently. It’s a big part of the definition of a compiler, for instance. It’s also how the go test command works: it scans the packages to be tested, writes out a
Defer, Panic, and Recover - The Go Programming Language
Andrew Gerrand 4 August 2010 Go has the usual mechanisms for control flow: if, for, switch, goto. It also has the go statement to run code in a separate goroutine. Here I’d like to discuss some of the less common ones: defer, panic, and recover. A defer statement pushes a function call onto a list. The list of saved calls is executed after the surrounding function returns. Defer is commonly used t
Deploying Go servers with Docker - The Go Programming Language
Andrew Gerrand 26 September 2014 Introduction This week Docker announced official base images for Go and other major languages, giving programmers a trusted and easy way to build containers for their Go programs. In this article we’ll walk through a recipe for creating a Docker container for a simple Go web application and deploying that container to Google Compute Engine. If you’re not familiar w
Inside the Go Playground - The Go Programming Language
The playground service has three parts: A back end that runs on Google’s servers. It receives RPC requests, compiles the user program using the gc tool chain, executes the user program, and returns the program output (or compilation errors) as the RPC response. A front end that runs on Google App Engine. It receives HTTP requests from the client and makes corresponding RPC requests to the back end
Strings, bytes, runes and characters in Go - The Go Programming Language
Rob Pike 23 October 2013 Introduction The previous blog post explained how slices work in Go, using a number of examples to illustrate the mechanism behind their implementation. Building on that background, this post discusses strings in Go. At first, strings might seem too simple a topic for a blog post, but to use them well requires understanding not only how they work, but also the difference b
Go version 1 is released - The Go Blog
Today marks a major milestone in the development of the Go programming language. We're announcing Go version 1, or Go 1 for short, which defines a language and a set of core libraries to provide a stable foundation for creating reliable products, projects, and publications. Go 1 is the first release of Go that is available in supported binary distributions. They are available for Linux, FreeBSD, M
Profiling Go Programs - The Go Programming Language
Russ Cox, July 2011; updated by Shenghou Ma, May 2013 24 June 2011 At Scala Days 2011, Robert Hundt presented a paper titled Loop Recognition in C++/Java/Go/Scala. The paper implemented a specific loop finding algorithm, such as you might use in a flow analysis pass of a compiler, in C++, Go, Java, Scala, and then used those programs to draw conclusions about typical performance concerns in these
The Go Blog - The Go Programming Language
Go 1.23 is released, 13 August 2024 Dmitri Shuralyov, on behalf of the Go team Go 1.23 adds iterators, continues loop enhancements, improves compatibility, and more. Secure Randomness in Go 1.22, 2 May 2024 Russ Cox and Filippo Valsorda ChaCha8Rand is a new cryptographically secure pseudorandom number generator used in Go 1.22. Evolving the Go Standard Library with math/rand/v2, 1 May 2024 Russ Co
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Go Concurrency Patterns: Pipelines and cancellation - The Go Programming Language
The path to Go 1 - The Go Programming Language
Go for App Engine is now generally available - The Go Programming Language