MVar

Returned by the apply builder.

Builds an MVar value for F data types that are either Concurrent or Async.

Due to Concurrent's capabilities, the yielded values by MVar.take and MVar.put are cancelable. For Async however this isn't guaranteed, although the implementation does rely on bracket, so it might be.

This builder uses the Partially-Applied Type technique.

For creating an empty MVar:

MVar[IO].empty[Int]() <-> MVar.empty[IO, Int]()

For creating an MVar with an initial value:

MVar[IO].of("hello") <-> MVar.of[IO, String]("hello")

Builds an empty MVar instance.

Builds an MVar instance with an initial value.