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Programming languages are important for communicating with computers
The earliest programming languages predate the computer and were used to direct machines with fixed-width, unchanging data. Those early programs included machine code, which was limited to the vocabulary of binary numbers and a handful of symbols. Machine code is the native language of computer processors and is considered to be the lowest level of programming, but it was the only practical way to program a computer when it was first invented.
Facebook uses a programming language called Hack
Facebook uses a programming language called Hack. Facebook started to use Hack in 2004, when Mark Zuckerberg took over the company. At Facebook, Hack has been used to create many software applications that affect the users’ social experience and even advertise products. Facebook’s Hack is not similar to other programming languages because it has no typing system, which means that the user’s input is not directly translated into machine language. It also provides a new way of testing software by dynamically creating virtual machines in the computer. Instead of static analysis, static program analysis is used, where any change can have an impact on the software. Hack has its own syntax and grammar rules, or grammar. It has three kinds of statements: procedures, function calls and flow control statements.
Programming language: Hack
Category: programming languages
Description: the free programming language for Web, written in the 2005 by Peter Norvig and other famous researchers. The objective is to simplify the development of software by providing a simple and powerful syntax and a rich set of libraries that ease software development. In addition, it provides high performance on all modern computer platforms.
The following are some examples are main features of Hack programming language:
– high-level syntax with control structures such as if … then … else … end, while, switch and for … end
– garbage collection eliminates the need to free memory
– dynamic typing allows a variable to be defined without specifying its type
– extensive use of whitespace for improve readability, Hack does not require commas between parameters or curly brackets around blocks of code
– built in support for Unicode and in source character set conversion

Hack was developed at Facebook to make it easier for developers to create web applications
Facebook’s Hack was originally developed at Facebook to allow its programmers to create web applications. It was not until the end of 2007 that Hack became the Facebook programming language used in production code. The company decided to write a new language, because the previous language, PHP, showed too many inconsistencies. PHP allows structures to be defined as data structures. Therefore programmers can create a structure and then store the information directly in their program code. For example while creating an object with a friend record structure, they can store the information easily into their programs. Hack is a new language that allows programmers to build applications on Facebook. It focuses on the user interface of the application, as well as making development easy. Hack was created so that Facebook can have its own programming language. The company is no longer using PHP, which has been in use for more than ten years to help create the social network. So why was PHP replaced with Hack ? Facebook wants to build a new programming language that is vastly different from PHP. It is necessary to create a language whose use is consistent and easy. And this language should be written for Facebook production code.

Hack is similar to PHP, which is also a popular programming language
Hack also has similarities to PHP. It allows programmers to use the same words as PHP, where they can define function calls and make other variables available. Hack can be used to access elements in an array called fb_users and then assign values to its attributes. The Hack language is also similar in that it provides classes, which are reusable objects that are easy for developers to build new features on top of. There are several different ways of communicating with your computer. All these ways are known as programming languages and programmers use them to build different applications. Hack is Facebook’s programming language, and some of its features are similar to PHP, but other features are not. PHP is a widely used programming language that is often used for web development. Hack allows programmers to use the same words as PHP, where they can define function calls and make other variables available. Hack can be used to access elements in an array called fb_users and then assign values to its attributes. However, Hack does not provide classes; class are functions that are reusable for building new features on top of them. There are several different ways of communicating with your computer. All these ways are known as programming languages and programmers use them to build different applications. Hack is Facebook’s programming language, and some of its features are similar to PHP, but other features are not.
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(ETHICS notes)

Developers who are skilled in Hack can expect to find jobs at Facebook and other companies that use the language
Developers who are skilled in Hack can expect to find jobs at Facebook and other companies that use the language. This is because Facebook intends to make Hack a major programming language that is used by lots of software developers. Facebook has become highly successful as a social networking site and its users are increasing rapidly. There are millions of users using Facebook and it has billions of users. Therefore it has become a great place for developers to work as they make applications that are used by millions around the world. These applications are highly profitable because the revenue generated is large, which can result in high salaries. Programmers who make applications that are used by millions of people will have high salaries and they will be at the top of their professions.
http://www.cebglobal.com/blog/ceb-blog/2015/04/hack-a-new-language-from-facebook
https://www.facebook.com/notes/facebook-engineering/the-evolutionary-paths-of-javascript/10153863858647226
https://towardsdatascience .com/the-evolutionary-paths-of-javascript-3e8d03200a9c
https://www.facebook.com/notes/facebook-engineering/hack/111749810984844
http://www.zdnet.com/article/facebook-releases-hack-a-new-programming-language/#ftag=RSSbaffb68
https://medium .com/my-tech-talks/hack-a-new-programming-language-from-facebook-8cdc479e7335
http://thenextweb.com/facebook/2015/04/17/what-is-hackintosh/?preview=true
