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Contents
/**
* Generates an observable sequence by iterating a state from an initial state until the condition fails.
*
* @example
* res = source.generateWithRelativeTime(0,
* function (x) { return return true; },
* function (x) { return x + 1; },
* function (x) { return x; },
* function (x) { return 500; }
* );
*
* @param {Mixed} initialState Initial state.
* @param {Function} condition Condition to terminate generation (upon returning false).
* @param {Function} iterate Iteration step function.
* @param {Function} resultSelector Selector function for results produced in the sequence.
* @param {Function} timeSelector Time selector function to control the speed of values being produced each iteration, returning integer values denoting milliseconds.
* @param {Scheduler} [scheduler] Scheduler on which to run the generator loop. If not specified, the timeout scheduler is used.
* @returns {Observable} The generated sequence.
*/
Observable.generateWithRelativeTime = function (initialState, condition, iterate, resultSelector, timeSelector, scheduler) {
isScheduler(scheduler) || (scheduler = timeoutScheduler);
return new AnonymousObservable(function (observer) {
var first = true,
hasResult = false,
result,
state = initialState,
time;
return scheduler.scheduleRecursiveWithRelative(0, function (self) {
hasResult && observer.onNext(result);
try {
if (first) {
first = false;
} else {
state = iterate(state);
}
hasResult = condition(state);
if (hasResult) {
result = resultSelector(state);
time = timeSelector(state);
}
} catch (e) {
observer.onError(e);
return;
}
if (hasResult) {
self(time);
} else {
observer.onCompleted();
}
});
});
};
Version data entries
14 entries across 7 versions & 1 rubygems