package com.kickstarter.libs;

import android.util.Pair;

import rx.Observable;

public class RxUtils {
  private RxUtils() {
    throw new AssertionError();
  }

  public static <F, S> Observable<Pair<F, S>> combineLatestPair(final Observable<F> ob1, final Observable<S> ob2) {
    return Observable.combineLatest(ob1, ob2, Pair::new);
  }

  public static <F, S> Observable<F> takeWhen(final Observable<F> ob1, final Observable<S> ob2) {
    return RxUtils.combineLatestPair(ob1, ob2).map(x -> x.first);
  }
}

@@ -327,32 +327,71 @@
 air::new);%0A  %7D%0A%0A
+  // Take values of ob1 when ob2 pings%0A
   public static 

Add a lil comment explaining takeWhen