RxJava-pull-requests #284 SUCCESS
This pull request looks good

I haven't looked at the first question yet, but on the second one we'll likely need to stop importing org.mockito.Matchers.* and call it directly org.mockito.Matchers.any.

Sorry that I missed the keyword empty in my description. The first question is I'm not sure how to handle an empty observable sequence.

RxJava-pull-requests #285 ABORTED

I tested the C# Any today. The environment is VS2010 .Net 4.0.

I found the description in my VS is Determines whether any element of an observable sequence satisfies a condition. This is totally different from the online document http://msdn.microsoft.com/en-us/library/hh211993(v=vs.103).aspx.

I always did some tests for Any. Here is the code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reactive.Linq;
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            var any = Observable.Empty().Any();
            any.Subscribe(
                x => Console.WriteLine("subscriber got " + x) // subscriber got False
            );
            any = Observable.Range(1, 5).Any();
            any.Subscribe(
                x => Console.WriteLine("subscriber got " + x) // subscriber got True
            );
            
            any = Observable.Empty().Any(
                x => true
            );
            any.Subscribe(
                x => Console.WriteLine("subscriber got " + x) // subscriber got False
            );
            any = Observable.Range(1, 5).Any(
                x => x > 3
            );
            any.Subscribe(
                x => Console.WriteLine("subscriber got " + x) // subscriber got True
            );
            any = Observable.Range(1, 5).Any(
                x => x > 5
            );
            any.Subscribe(
                x => Console.WriteLine("subscriber got " + x) // subscriber got False
            );
            Console.ReadLine();
        }
    }
}

Here is the output:

subscriber got False
subscriber got True
subscriber got False
subscriber got True
subscriber got False

In summary,

• If an observable sequence is empty, any emits false.
• If one element of an observable sequence satisfies the condition, any emits true.
• If all elements of an observable sequence do not satisfy the condition, any emits false.

I have implemented the correct 'any' operator. Please take a look. Thanks!

RxJava-pull-requests #286 ABORTED

In Scala, we will probably use isEmpty instead of any() (negated), and exists(somePredicate) instead of any(somePredicate). You could use these names also in Java, to avoid confusion and name conflicts.

@zsxwing I don't have time tonight but will definitely get to this in the near future, thank you for getting involved!