Primitive Types

Rogue has few built-in primitive types to represent numbers, addresses and boolean values: integers (u8, u64, u128), boolean and address.

Rogue does not have string type or floating point numbers.

Integer types

Integers are represented by u8, u64 and u128; Possible integer notations are:

script {

fun main() {

// define empty variable, set value later

let a: u8;

a = 10;

// define variable, set type

let a: u64 = 10;

// finally simple assignment

let a = 10;

// simple assignment with defined value type

let a = 10u128;

// in function calls or expressions you can use ints as constant values

if (a < 10) {};

// or like this, with type

if (a < 10u8) {}; // usually you don't need to specify type

}

}

Operator as

When you need to compare values or when function argument requires integer of different size you can cast your integer variable to another size by using operator as:

script {

fun main() {

let a: u8 = 10;

let b: u64 = 100;

// we can only compare same size integers

if (a == (b as u8)) abort 11;

if ((a as u64) == b) abort 11;

}

}

Boolean

Boolean type is just the one you're used to. Two constant values: false and true - both can only mean one thing - a value of bool type.

script {

fun main() {

// these are all the ways to do it

let b : bool; b = true;

let b : bool = true;

let b = true

let b = false; // here's an example with false

}

}

Address

Address is an identifier of sender (or wallet) in blockchain. The very basic operations which require address type are sending coins and importing methods.

script {

fun main() {

let addr: address; // type identifier

// in this guide we have used {{sender}} notation;

// in practice `{{sender}}` should be replaced with the VM specific address!!!

addr = {{sender}};

// Addresses in Dijets are bech32 encoded addresses with 'dijets...' as the prefix. For local runs and experiments "0x1... 0x2..." address has been used for convenience.

addr = 0x...;

}

}