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TypeScript - 2 views

started by Cédric Lampron on 08 Jun 15 no follow-up yet
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| The Definitive TypeScript Guide | Blog | SitePen - 1 views

www.sitepen.com/...definitive-guide-to-typescript TypeScript
shared by Cédric Lampron on 08 Jun 15 - No Cached
  • optional parameters, default argument values, rest parameters, and fat arrow functions
    • Cédric Lampron
      Cédric Lampron on 08 Jun 15
       
      Default : "exclusive?"
  • Optional parameters can now be defined by suffixing a parameter identifier with a question mark:
  • An optional parameter
  • ...9 more annotations...
  • 123function getRange(max, min = 0, exclusive = false) {  // ...}
    • Cédric Lampron
      Cédric Lampron on 08 Jun 15
       
      Optional Parameter
  • ypeScript also adds support for a final variadic ...rest parameter, which collects any extra arguments passed to the function into a single named array:
  • 23function publish(topic, ...args):void {  // ...}
    • Cédric Lampron
      Cédric Lampron on 08 Jun 15
       
      calling publish('/foo', 'a', 'b', 'c') would cause topic to be a string '/foo' and args to be an array [ 'a', 'b', 'c' ].
  • 12var x, y;[x, y] = [10, 20];
  • any, number, string, boolean, and void (i.e. null or undefined)
  • TypeScript allows complex types
  • the properties of each object are compared
  • interface IPoint {  x: number;  y: number;} var point: IPoint;var point2: IPoint;
  • interface IPoint3d extends IPoint {  z: number;}
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Floating point - Wikipedia, the free encyclopedia - 1 views

en.wikipedia.org/...Floating_point
shared by Cédric Lampron on 20 May 15 - Cached
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