Golang Built In Functions

Review built-in functions like append and make. Use keywords in programs.

Built-ins. Go programs use packages to add functionality. But core functions are built into the language. With built-ins we perform common tasks.

A list. Here is a list of built-in functions in the Go language. These methods can be called directly, in any program, as they are part of the core.append cap copy delete len make new panic print println recover

Keywords. In Go we find many keywords. We use these keywords to act upon variables and more complex types (as from packages). These are available in all programs.break case chan const continue default defer else fallthrough for func go if import interface iota map nil range return struct switch type var

Packages. We use the "import" keyword to add a package to a Go program. Once we import package "Y" we can invoke methods on it like Y.Do().bufio bytes compress/gzip container/list encoding/base64 encoding/csv encoding/json flag fmt html/template io/ioutil index/suffixarray math math/bits net/http os os/exec path path/filepath regexp sort strconv rand strings time unicode

Funcs. In Go we rely on funcs from packages. To display to the console, for example, we use the Println method from the fmt package. Some strings methods are listed here.Atoi FormatInt Index Itoa Join LastIndex MatchString Now ParseInt Print Println Replace Sort Split

Go specification. For detailed descriptions of Go keywords, I recommend reading the official Go specification. This document is not exciting, but it is excellent in every other way.Go Specification: golang.org

Some notes. Operators are another key part of the Go language. These include the plus + and other arithmetic ones. These operators too are built in.

In Go we find a newer, well-designed set of features. The Go compiler itself is an impressive technical feat. A Go developer will do great things in the world.

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Golang Built In Functions

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