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TypeScript Observable.fromCallback方法代码示例

本文整理汇总了TypeScript中rx-lite.Observable.fromCallback方法的典型用法代码示例。如果您正苦于以下问题:TypeScript Observable.fromCallback方法的具体用法?TypeScript Observable.fromCallback怎么用?TypeScript Observable.fromCallback使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在rx-lite.Observable的用法示例。


在下文中一共展示了Observable.fromCallback方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的TypeScript代码示例。

示例1: getDataObservable

  private getDataObservable() {
    let click = Rx.Observable.fromEvent($("#openFile"), "click");

    // fromCallback() converts a function that takes a callback into a new
    // function that takes all of the original function's arguments except the
    // callback and returns an Observable of the callback's return value.
    let opener = Rx.Observable.fromCallback(dialog.showOpenDialog);
    let reader = Rx.Observable.fromCallback(fs.readFile);
    let isValid: boolean;

    // Pipeline of observables to convert a stream of clicks into a stream of
    // validated file data
    return click
      .flatMap(() => opener({ properties: ["openFile"] }) // returns the selected filename (as one-item array)
        .filter(f => f) // Don't emit event if user didn't select a file
        .flatMap(f => reader(f[0], "utf-8")) // map file name stream to file data stream
        .map(d => d[1]) // Hack: Observable-wrapped readFile returns [null, fileData] (?)
        .do(d => {
          isValid = Parser.validateData(d); // put validity info in outer scope...
          if (!isValid) alert("Invalid data");
        })
        .filter(() => isValid)); // ...so .filter() doesn't have to call validateData() again
  }
开发者ID:Ethan826,项目名称:tablexi-coding-challenge,代码行数:23,代码来源:browser.ts

示例2: fromCallback

	function fromCallback() {
		// 0 arguments
		const func0: (cb: (result: number) => void) => void = () => { };
		obsNum = Rx.Observable.fromCallback(func0)();
		obsNum = Rx.Observable.fromCallback(func0, obsStr)();
		obsNum = Rx.Observable.fromCallback(func0, obsStr, (results: number[]) => results[0])();

		// 1 argument
		const func1: (a: string, cb: (result: number) => void) => number = () => 0;
		obsNum = Rx.Observable.fromCallback(func1)("");
		obsNum = Rx.Observable.fromCallback(func1, {})("");
		obsNum = Rx.Observable.fromCallback(func1, {}, (results: number[]) => results[0])("");

		// 2 arguments
		const func2: (a: number, b: string, cb: (result: string) => number) => Date = () => new Date();
		obsStr = Rx.Observable.fromCallback(func2)(1, "");
		obsStr = Rx.Observable.fromCallback(func2, {})(1, "");
		obsStr = Rx.Observable.fromCallback(func2, {}, (results: string[]) => results[0])(1, "");

		// 3 arguments
		const func3: (a: number, b: string, c: boolean, cb: (result: string) => number) => Date = () => new Date();
		obsStr = Rx.Observable.fromCallback(func3)(1, "", true);
		obsStr = Rx.Observable.fromCallback(func3, {})(1, "", true);
		obsStr = Rx.Observable.fromCallback(func3, {}, (results: string[]) => results[0])(1, "", true);

		// multiple results
		const func0m: (cb: (result1: number, result2: number, result3: number) => void) => void = () => { };
		obsNum = Rx.Observable.fromCallback(func0m, obsStr, (results: number[]) => results[0])();
		const func1m: (a: string, cb: (result1: number, result2: number, result3: number) => void) => void = () => { };
		obsNum = Rx.Observable.fromCallback(func1m, obsStr, (results: number[]) => results[0])("");
		const func2m: (a: string, b: number, cb: (result1: string, result2: string, result3: string) => void) => void = () => { };
		obsStr = Rx.Observable.fromCallback(func2m, obsStr, (results: string[]) => results[0])("", 10);
	}
开发者ID:cronon,项目名称:DefinitelyTyped,代码行数:33,代码来源:rx-lite-tests.ts


注:本文中的rx-lite.Observable.fromCallback方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。