July 2019
Intermediate to advanced
458 pages
12h 12m
English
Content preview from Hands-On System Programming with Go
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 16
- What is CGO? CGO is a powerful Go tool that handles communication between C code and Go code. This allows C code to be used in a Go application and to leverage the huge amount of existing C libraries.
- How can you call C code from Go? Go offers a pseudo package called C that exposed C types, such as C.int, and some functions that will convert Go strings and bytes into C character arrays, and vice versa. The comment that comes before the import C package will be interpreted as C code, and all the functions defined in it ( be it directly, or by importing files), will be available in Go as functions of the C package.
- How can you use Go code in C? If a Go function is preceded by a special comment, //export, this function will be available ...
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