Santosh Tewari: Hack Facebook

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Simple ways to use Pair in Hack Language Facebook

Pair in Hack The Hack Language supports various collection types including Pair . There are various simple ways to use Pair in Hack Langu...

Set in Hack The Hack Language supports various collection types including Set . Sets in Hack Language simply represents an unordered a...

Map in Hack Language Facebook Hack Language supports Map that are simply an ordered dictionary-style collection. Map in Hack Language F...

Vector in Hack In Hack Language Vectors are an integer-indexed (zero-based) collection. Vectors allows random access to its elements w...

Hack introduces the concept of Collections. Collections are basically used for data storage and retrieval. Collections implement many of t...

Hack introduces a new way to handle null values by introducing the concept of Nullable. ? Operator is used for representing Nullable type...

Hack Language introduces the concept of generics to PHP. It allows a class or function or interface to define the type of it’s at the time...

The HACK language code is generally written in one of the three modes: Strict Partial Decl Unsafe These modes provides the developers th...

In certain situations, it is difficult to determine the return type of a function prior to its call. In that situation we use the ‘mixed’ ...

Using this in Hack Language is shown below: As we see in the example below that ' this ' can also be used as return type of a func...

In HACK array can be created using one of the following ways: Untyped Array : array Explicitly Typed Array with Integer key: array<Ty...

Allowed Type : float, int, bool Not Allowed Type : double, integer, boolean, real, binary Example: <?hh function typeCast(): bool ...

Function with no argument and no return type: <?hh // void indicate that a function does not return anything. function display(): voi...

Basic/Primitive Types: int, float, string, bool, array. Other Types: mixed, void, resource, array, Vector, tuple (type1, type2, . . .) ...

FEATURES OF HACK Hack provides a method, the ability to annotate and to specify the return type. Hack helps to detect unsafe coding ...