Feature of Hack Language Facebook

FEATURES OF HACK

• Hack provides a method, the ability to annotate and to specify the return type. 

• Hack helps to detect unsafe coding issues like using null values. 

• Hack provides a group of type safe collections like Vector, Map, Set, etc. 

• Hack also provides tools to the types called the ‘Hack Type Checker’. 

• Hack also reduces programmer overhead by minimizing the need of casting. 

• Hack also provides type related error messages that help the programmer to correct the core issues in their code. 

• Hack allows a programmer to call a PHP method and vice-versa. 

• Hack is basically designed to bridge the gap between dynamically and statically typed languages by providing features normally found in statically typed languages to PHP.