Go maps in action - The Go Programming Language
Andrew Gerrand 6 February 2013 Introduction One of the most useful data structures in computer science is the hash table. Many hash table implementations exist with varying properties, but in general they offer fast lookups, adds, and deletes. Go provides a built-in map type that implements a hash table. Declaration and initialization A Go map type looks like this: map[KeyType]ValueType where KeyT
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
Writing Web Applications - The Go Programming Language
Introduction Covered in this tutorial: Creating a data structure with load and save methods Using the net/http package to build web applications Using the html/template package to process HTML templates Using the regexp package to validate user input Using closures Assumed knowledge: Programming experience Understanding of basic web technologies (HTTP, HTML) Some UNIX/DOS command-line knowledge Ge
Toward Go 2 - The Go Programming Language
The release of Go 1 marked the culmination of nearly five years of creative, frenetic effort that took us from a name and a list of ideas to a stable, production language. It also marked an explicit shift from change and churn to stability. In the years leading to Go 1, we changed Go and broke everyone’s Go programs nearly every week. We understood that this was keeping Go from use in production s
cgo command - cmd/cgo - Go Packages
Cgo enables the creation of Go packages that call C code. Using cgo with the go command ¶To use cgo write normal Go code that imports a pseudo-package "C". The Go code can then refer to types such as C.size_t, variables such as C.stdout, or functions such as C.putchar. If the import of "C" is immediately preceded by a comment, that comment, called the preamble, is used as a header when compiling t
Error handling and Go - The Go Programming Language
Andrew Gerrand 12 July 2011 Introduction If you have written any Go code you have probably encountered the built-in error type. Go code uses error values to indicate an abnormal state. For example, the os.Open function returns a non-nil error value when it fails to open a file. func Open(name string) (file *File, err error) The following code uses os.Open to open a file. If an error occurs it call
Go Slices: usage and internals - The Go Programming Language
Go’s arrays are values. An array variable denotes the entire array; it is not a pointer to the first array element (as would be the case in C). This means that when you assign or pass around an array value you will make a copy of its contents. (To avoid the copy you could pass a pointer to the array, but then that’s a pointer to an array, not an array.) One way to think about arrays is as a sort o
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crypto package - crypto - Go Packages
Getting to Go: The Journey of Go's Garbage Collector - The Go Programming Language
cgo package - runtime/cgo - Go Packages
sync package - sync - Go Packages
color package - image/color - Go Packages
gzip package - compress/gzip - Go Packages
math package - math - Go Packages
First Class Functions in Go - The Go Programming Language
Arrays, slices (and strings): The mechanics of 'append' - The Go Programming Language
scanner package - go/scanner - Go Packages
http package - net/http - Go Packages
bits package - math/bits - Go Packages
builtin package - builtin - Go Packages