Add +combineLatest:

[bvanderveen]

+combineLatest: is the same as -combineLatest:reduce:, where the reduce defaults to the identity function.

Per github/ReactiveCocoa#43.

[jspahrsummers]

This is looking good. Do you mind adding a unit test as well?

[bvanderveen]

I was hoping you'd ask. ;) I'm in the midst of downloading OS X 10.8 so I
can compile the test suite. :S

On Mon, Aug 27, 2012 at 6:08 PM, Justin Spahr-Summers <
notifications@github.com> wrote:

This is looking good. Do you mind adding a unit test as well?

—
Reply to this email directly or view it on GitHubhttps://github.com/github/ReactiveCocoa/pull/44#issuecomment-8076406.

[jspahrsummers]

Does it not work on 10.7?

[bvanderveen]

Not for me. Tried twiddling Base SDK and compiler settings but no go.

[bvanderveen]

I have added a commit with tests.

[jspahrsummers]

This could just use [lastValues removeAllObjects], which would remove any need for the nextGate variable used here.

[jspahrsummers]

Almost there. Added an additional note.

[bvanderveen]

Good catch. Thanks!

[jspahrsummers]

🤘✨⚡🚢

[bvanderveen]

I just snuck one more minor commit in—could you take a look at it?

[jspahrsummers]

@bvanderveen I appreciate the thoroughness; however, object variables are default-initialized to nil under ARC:

Initialization occurs when an object's lifetime begins, which depends on its storage duration. Initialization proceeds in two stages:

First, a null pointer is stored into the lvalue using primitive semantics. This step is skipped if the object is __unsafe_unretained.
Second, if the object has an initializer, that expression is evaluated and then assigned into the object using the usual assignment semantics.

[bvanderveen]

True. Figured it was better to be explicit, but it's your call. :)

[jspahrsummers]

Any removal of boilerplate is 👍 to me, so I'd like to leave it out.

[bvanderveen]

Thanks for the merge!