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Go – Programming language by Google

Posted by admin on January - 22 - 2018

Go language is a programming language initially developed by Google in the year of 2007 by Robert Griesemer, Rob Pike, and Ken Thompson. It’s a statically-typed language having syntax like that of C. It provides trash collection, type safety, dynamic-typing capability, several advanced inbuilt varieties like variable length arrays and key-value maps. It also provides a fashionable customary library. The Go programming language was launched in November 2009 and is employed in a number of the Google’s production systems.

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Programs are made using packages, for efficient management of dependencies. Go programming implementations use a standard compile and link model to generate executable binaries. The Go programming language was declared in Gregorian calendar month 2009 and is employed in a number of the Google’s production systems.

Features of Go Programming

The most important features of Go programming are listed below −

  • Support for Interfaces and Type embedding.
  • Compilation time is fast.
  • Go programs are simple, concise, and safe.
  • Support for environment adopting patterns similar to dynamic languages. For example, type inference (x := 0 is valid declaration of a variable x of type int)
  • Inbuilt concurrency support: lightweight processes (via go routines), channels, select statement.
  • Production of statically linked native binaries without external dependencies.

Features Excluded Intentionally

To keep the language simple and concise, the following features commonly available in other similar languages are omitted in Go −

  • Support for type inheritance
  • Support for generic programming
  • Support for assertions
  • Support for circular dependencies among packages
  • Support for method or operator overloading
  • Support for pointer arithmetic

Go Programs

A Go program will vary long from three lines to millions lines and it ought to be written into one or additional text files with the extension “.go”. as an example, hello.go.

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You can use “vi”, “vim” or the other text editor to put in writing your Go program into a file.

Local environment Setup

If you’re still willing to line up your environment for Go programing language, you would like the subsequent 2 software system available in your computer −

  • A text editor
  • Go compiler

Text Editor

You will need a text editor to type your programs. Examples of text editors include Windows Notepad, OS Edit command, Brief, Epsilon, EMACS, and vim or vi.

The name and version of text editors will vary on totally different in operation systems. As an example, Notepad is employed on Windows, and vim or vi is used on Windows additionally as UNIX operating system or OS.

The files you produce with the text editor are known as source files. They contain program source code. The source files for Go programs are usually named with the extension “.go”.

Before beginning your programming, confirm you have got a text editor in place and you have got enough expertise to write a program and save it in a file then compile it and at last execute the file.

The Go Compiler

The source code written in source file is that the human readable source for your program. It has to be compiled and became machine language in order that your CPU will really execute the program as per the directions given. The Go programming language compiler compiles the source code into its final executable program.

Go distribution comes as a binary installable for FreeBSD (release eight and above), Linux, macintosh OS X (Snow Leopard and above), and Windows in operation systems with 32-bit (386) and 64-bit (amd64) x86 processor architectures.

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How to install Go binary distribution on various OS.

Download the latest version of Go installable archive file from Go Downloads.

Extract the download archive into the folder /usr/local, creating a Go tree in /usr/local/go.

For example −

tar -C /usr/local -xzf go1.4.linux-amd64.tar.gz

Add /usr/local/go/bin to the PATH environment variable.

OS       Output

Linux   export PATH = $PATH:/usr/local/go/bin

Mac     export PATH = $PATH:/usr/local/go/bin

FreeBSD         export PATH = $PATH:/usr/local/go/bin

Installation on Windows

Use the MSI file and follow the prompts to install the Go tools. By default, the installer uses the Go distribution in c:\Go. The installer should set the c:\Go\bin directory in Window’s PATH environment variable. Restart any open command prompts for the change to take effect.

Verifying the Installation

Create a go file named test.go in C:\>Go_WorkSpace.

Conclusion

Even though Go is extremely a different from other object-oriented languages, it’s still a similar beast. Go provides you high performance like C/C++, super efficient concurrency handling like Java and fun to code like Python/Perl.

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