11 lines
		
	
	
		
			325 B
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			11 lines
		
	
	
		
			325 B
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
| // #docregion Observable
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| import {Observable, Subscriber} from 'rxjs/Rx';
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| import 'rxjs/add/operator/map';
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| 
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| var obs = new Observable<number>((obs: Subscriber<any>) => {
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|   var i = 0;
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|   setInterval(_ => obs.next(++i), 1000);
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| });
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| obs.map((i: number) => `${i} seconds elapsed`).subscribe(msg => console.log(msg));
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| // #enddocregion
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