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Variables and Constants Declaration

This document provides examples of how to declare variables and constants in Flow-Wing.

Variable Declaration​

Variables in Flow-Wing can be declared with a specific data type and assigned a value.

Example:​

var integer: int = 10
var decimal: deci = 5.5
var _string: str = "Hello, Flow-Wing!"
var _boolean: bool = true
var someThing = "Hello, Flow-Wing!"

Here variable someThing is a Dynamic Type Variable that can be assigned any value. but its current value is "Hello, Flow-Wing!" which is a string.

Dynamically Allocated Variables​

Variables in Flow-Wing can be dynamically allocated. This means that they can be assigned a value at runtime.

Example:​

var number: int  = new 2
var string: str = new "Hello, Flow-Wing!"
var boolean: bool = new true

Example with Complex Type:​

type Person = {
  name: str,
  age: int,
  height: deci
}

var person: Person = { name: "Alice", age: 30, height: 5.5 }
print(person)

Example with Array Type:​

var numbers: int[5] = [1, 2, 3, 4, 5]

Example with Default Value:​

var numbers: int[5]

Here numbers is an array of int with a default value of [0, 0, 0, 0, 0].

Constant Declaration​

Constants are immutable and cannot be changed after being assigned.

Example:​

const x: int = 2