Roteiro

Roteiro

• Type Compatibility
• Advanced Types
• Symbols
• Iterators and Generators
• Modules
• Namespaces
• Decorators

Basic Types

http://www.typescriptlang.org/docs/handbook/basic-types.html

let isDone: boolean = false;

Boolean

let decimal: number = 6;
let hex: number = 0xf00d;
let binary: number = 0b1010;
let octal: number = 0o744;

Number

let color: string = "blue";
color = 'red';

String

let fullName: string = `Bob Bobbington`;
let age: number = 37;
let sentence: string = `Hello, my name is ${ fullName }.

I'll be ${ age + 1 } years old next month.`

let list: number[] = [1, 2, 3];

Array

let list: Array<number> = [1, 2, 3];

let list: number[] = [1, 2, 3];

Array

let list: Array<number> = [1, 2, 3];

// Declare a tuple type
let x: [string, number];

// Initialize it
x = ["hello", 10]; // OK

// Initialize it incorrectly
x = [10, "hello"]; // Error

Tuplas

// OK
console.log(x[0].substr(1));

// Error, 'number' does not have 'substr'
console.log(x[1].substr(1));

enum Color {Red, Green, Blue};
let c: Color = Color.Green;

Enum

// OK
console.log(x[0].substr(1));

// Error, 'number' does not have 'substr'
console.log(x[1].substr(1));

Variable Declarations

http://www.typescriptlang.org/docs/handbook/variable-declarations.html

var, let and const