Using NSProgress as a Cancellation Token

[ChrisSchneider]

After reading about the interesting idea of cancellation tokens in the readme,
I thought about using NSProgress instead of implementing it on my own.
Are there any known problems or issues with this approach?

[lxcid]

Interesting suggestion. As Ole Begemann mentioned in his post, NSProgress is thread-safe.

The only issue this might be a problem is when you (or some other libraries) use it to create tree of progress.
It actually make sense to recommendsNSProgress as cancellation token. It can then hook up to system behaviour.

I'll be trying your suggestion out. :)

[josephearl]

I think my preference would be to write classes similar to CancellationToken and IProgress for cross-platform consistency - though it would certainly be a good idea to allow creating a CancellationTokenSource or IProgress from an NSProgress.

[josephearl]

See #89

[tettoffensive]

@josephearl is there an example somewhere of how I can use NSProgress with BFTasks? I have some videos that are going through an encoding process and uploading process and want to show the user a progress bar with the ability to cancel as well. But I'm a bit lost as to where to start. Right now I have a "progress" block that sits outside the bftask infrastructure.