Go最新资料汇总（七十二）

## FEATURED [Understanding Nil (in Go)](https://speakerdeck.com/campoy/understanding-nil?utm_source=golangweekly&utm_medium=email) Slidedeck from the opening keynote at GopherCon 2016 digging into nil, what it represents, what it means, and how it’s defined in Go. [GoTrace: Concurrency Tracer and Visualizer for Go](https://github.com/divan/gotrace?utm_source=studygolang&utm_medium=email) A 3D (WebGL) visualizer of Go concurrency flows. It analyzes trace produced by go tool trace. [BuntDB: Embeddable, In-Memory Key/Value Database for Go](https://github.com/tidwall/buntdb?utm_source=studygolang&utm_medium=email) A low-level, in-memory (but persists to disk), key/value store in pure Go, with geospatial support. Inspired by BoltDB. [Go 1.6.3 and 1.7rc2 Released](https://groups.google.com/d/msg/golang-nuts/kfzBGiAcxME/3sDd4A-3CQAJ?utm_source=studygolang&utm_medium=email) Versions 1.6.3 and 1.7rc2 contain a fix for a security-related issue (httpoxy in particular) in addition to adding support for the upcoming macOS Sierra. [How to Correctly Use context.Context in Go 1.7](https://medium.com/@cep21/how-to-correctly-use-context-context-in-go-1-7-8f2c0fafdf39?utm_source=studygolang&utm_medium=email) A look at a new library in Go 1.7, the context library, and when or how to correctly use it. [Gongular: A Different Approach to Go Web Frameworks](https://github.com/mustafaakin/gongular?utm_source=studygolang&utm_medium=email) An HTTP server framework for developing APIs easily. It’s similar to Gin Gonic, but features Angular-like dependency injection and better input handling. ## IN BRIEF [A Retrospective of GopherCon 2016](https://blog.gopheracademy.com/gophercon-2016/gophercon2016-retrospective/?utm_source=studygolang&utm_medium=email) A look back at GopherCon 2016, which took place in Denver earlier this month. [Building Your Own Build Status Indicator with Go and a Raspberry Pi 3](https://scene-si.org/2016/07/19/building-your-own-build-status-indicator-with-golang-and-rpi3/?utm_source=studygolang&utm_medium=email) [Using Go For Custom Wallpapers](https://pettigrew.rocks/2016/07/17/always-having-custom-wallpapers-with-golangs-draw-library/?utm_source=studygolang&utm_medium=email) A fun project for creating custom desktop wallpapers. There’s an [associated GitHub repo](https://github.com/john-pettigrew/wallpaper-customizer). [Go is for Everyone](https://medium.com/@mattetti/go-is-for-everyone-b4f84be04c43?utm_source=studygolang&utm_medium=email) [Debug and Support Your Go Apps with Backtrace. Free to Try.](http://backtrace.io/) Capture and analyze the complete state of your Go apps at the time of error. Go beyond error reports. [Read more.](http://backtrace.io/blog/) [UniDoc: A PDF Toolkit for Go](http://unidoc.io/news/launching-unidoc?utm_source=studygolang&utm_medium=email) Released under a dual AGPL/commercial license. [Sleuth 1.0: Library for Masterless P2P Autodiscovery Between HTTP Services](http://ursiform.github.io/sleuth/?utm_source=studygolang&utm_medium=email) [fast: Minimal Zero-dependency Utility for Testing Internet Download Speed](https://github.com/ddo/fast?utm_source=studygolang&utm_medium=email) A very simple wrapper around fast.com. [Work: Enqueue and Processes Background Jobs in Go](https://github.com/gocraft/work?utm_source=studygolang&utm_medium=email) [mailchimp-go: Go Client for MailChimp API V3](https://github.com/beeker1121/mailchimp-go?utm_source=studygolang&utm_medium=email) “While coverage of the MailChimp API is limited in the current state, the goal is to provide a basic structure that can be built upon to eventually have full coverage.”