WaitGroup and channels are two common ways to control concurrency, but for complex scenarios Context is a more elegant mechanism. Context provides four control mechanisms: WithCancel, WithValue, WithTimeout and WithDeadline.
mmap maps a file or device into memory — a one-to-one mapping between the file's on-disk address and a range of the process's virtual address space. Reading or writing that mapped memory reads or writes the file at the corresponding position. This tutorial shows how to use mmap in Go.
gomock is the official Go mocking library for unit tests, useful when dependencies such as network requests, databases or file I/O are complex and hard to call directly. This tutorial covers matchers (Any, Nil, Not, Eq), return values (Do, Return, DoAndReturn), call counts (Times) and ordering (InOrder), and how to write mockable code.
How to write unit tests in Go with the standard library testing package: subtests, table-driven tests, helper functions, setup and teardown, network/HTTP testing and benchmarks.
Front-end development with Go, WebAssembly and GopherJS: registering functions, interacting with browser JavaScript objects, manipulating DOM elements, asynchronous programming with callbacks, plus more advanced demos (games, rendering) and related projects and documentation.
Remote Procedure Call (RPC) in Go with the standard library net/rpc: synchronous and asynchronous calls, plus one-way and mutual authentication between server and client using TLS/SSL.
Protocol Buffers (protobuf) is a language- and platform-neutral, scalable and extensible way to serialize structured data — smaller and faster than JSON or XML. This tutorial covers Protocol Buffers 3 (proto3): installation, basic syntax and how to use it in Go.
What changes in Go 2 compared to Go 1: the latest design drafts covering packages, error handling, error values and generics, plus a short history of the Go language.
A quick-start tutorial for the Gin web framework: installing Go and setting up the environment, hot reload, routing and route groups, HTML templates, and middleware.
Learn Go (Golang) with a single article — installation, basic types (strings, ints, arrays, slices, maps), control flow (if, for, for-range, switch), composite types (structs, interfaces, methods), concurrency (goroutines, channels, sync), error handling (panic, error), Go Modules and how to write unit tests.
