| /** PURE_IMPORTS_START .._operators_map PURE_IMPORTS_END */ |
| import { map as higherOrderMap } from '../operators/map'; |
| /** |
| * Applies a given `project` function to each value emitted by the source |
| * Observable, and emits the resulting values as an Observable. |
| * |
| * <span class="informal">Like [Array.prototype.map()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map), |
| * it passes each source value through a transformation function to get |
| * corresponding output values.</span> |
| * |
| * <img src="./img/map.png" width="100%"> |
| * |
| * Similar to the well known `Array.prototype.map` function, this operator |
| * applies a projection to each value and emits that projection in the output |
| * Observable. |
| * |
| * @example <caption>Map every click to the clientX position of that click</caption> |
| * var clicks = Rx.Observable.fromEvent(document, 'click'); |
| * var positions = clicks.map(ev => ev.clientX); |
| * positions.subscribe(x => console.log(x)); |
| * |
| * @see {@link mapTo} |
| * @see {@link pluck} |
| * |
| * @param {function(value: T, index: number): R} project The function to apply |
| * to each `value` emitted by the source Observable. The `index` parameter is |
| * the number `i` for the i-th emission that has happened since the |
| * subscription, starting from the number `0`. |
| * @param {any} [thisArg] An optional argument to define what `this` is in the |
| * `project` function. |
| * @return {Observable<R>} An Observable that emits the values from the source |
| * Observable transformed by the given `project` function. |
| * @method map |
| * @owner Observable |
| */ |
| export function map(project, thisArg) { |
| return higherOrderMap(project, thisArg)(this); |
| } |
| //# sourceMappingURL=map.js.map |
