Santosh Tewari: Hack Tutorial

Showing posts with label Hack Tutorial. Show all posts

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 ...