Syntax

Declaration

Variable Declaration is inspired by JavaScript using the var / const keyword

var a = 10

var / const Keyword

• var is used to declare a variable that can be reassigned.
• const is used to declare a variable that cannot be reassigned.

Here the type of variable is inferred implicitly.

However we also provide support for explicit typing using the Colon syntax.

var a : int = 10

This syntax is quite similar to TypeScript

Assignment

The variables can be reassigned.

a = 20

Errors

In implicit typing, after type is inferred during declaration, reassigning it to another type later is not allowed and will throw an error:

>> var a = 10
10
>> a = "3dubs"
(1,1,1,1): Cannot convert type string to int implicitly.
    a = "3dubs"

Explicit typing also follows same convention as Implicit typing, but enforces the initial type during declaration.

>> var a : int = "3dubs"
(1,1,1,1): Cannot convert type string to int implicitly.
    var a : int = "3dubs"

Attempting to reassign a const variable will throw an error:

>> const x = 10
10
>> x = 11
(1,1,1,2): Variable 'x' is read-only and cannot be assigned to.
    x = 11