diff options
| -rw-r--r-- | typescript.html.markdown | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/typescript.html.markdown b/typescript.html.markdown index 8209fedb..74e98d14 100644 --- a/typescript.html.markdown +++ b/typescript.html.markdown @@ -18,7 +18,7 @@ var isDone: boolean = false; var lines: number = 42; var name: string = "Anders"; -//When it's impossible to know, there is the "Any" type +//..When it's impossible to know, there is the "Any" type var notSure: any = 4; notSure = "maybe a string instead"; notSure = false; // okay, definitely a boolean @@ -50,40 +50,32 @@ interface Person { name: string; //Optional properties, marked with a "?" age?: number; -} -//Object that implements the "Person" interface -var p : Person = { name: "Bobby" }; //Can be treated as a Person since it has the name and age properties -//Objects that have the optional property: -var validPerson : Person = { name: "Bobby", age: 42 }; -var invalidPerson : Person = { name: "Bobby", age: true }; //Is not a person because age is not a number - -//Interfaces can also define method signatures: -interface PersonWhoCanTalk { - sayHello(otherPersonsName: string): void; + //And of course functions + move(): void; } -//And also indexers, both with number and string -interface PersonWhoCanBeIndexed { - [index: number]: string; -} -//TODO +//..Object that implements the "Person" interface +var p : Person = { name: "Bobby", move : () => {} }; //Can be treated as a Person since it has the name and age properties +//..Objects that have the optional property: +var validPerson : Person = { name: "Bobby", age: 42, move: () => {} }; +var invalidPerson : Person = { name: "Bobby", age: true }; //Is not a person because age is not a number -//Interfaces can also describe a function type +//..Interfaces can also describe a function type interface SearchFunc { (source: string, subString: string): boolean; } -//Only the parameters' types are important, names are not important. +//..Only the parameters' types are important, names are not important. var mySearch: SearchFunc; mySearch = function(src: string, sub: string) { return src.search(sub) != -1; } -//Classes +//Classes - members are public by default class Point { //Properties x: number; - //Constructor - the public/private keywords are shortcuts to generate the code for a property and its initialization + //Constructor - the public/private keywords in this context are shortcuts to generate the code for a property //Equivalent to "x" in this case //Default values are also supported constructor(x: number, public y: number = 0) { @@ -113,7 +105,23 @@ class Point3D extends Point { } } -//Modules +//Modules, "." can be used as separators for sub modules +module Geometry { + export class Square { + constructor(public sideLength: number = 0) { + } + area() { + return Math.pow(this.sideLength, 2); + } + } +} + +var s1 = new Geometry.Square(5); + +//..Local alias for rreferencing a module +import G = Geometry; + +var s2 = new G.Square(10); //Generics |