golearn | Machine Learning for Go | Machine Learning library

What if you use the LinearLayout instead of grid, your buttons are static views:

Set the LinearLayout orientation to vertical and the weight of items to 1.

for ... range over a channel terminates only once all values have been received from the channel and the channel has been closed.

In your example you wish to close the channel in a deferred function, but that would only run when main() returns. But main() would only return if the loop would end. This is the cause of deadlock. The for loop waits for the channel to be closed, and closing the channel waits for the for loop to end.

When you use a loop to receive exactly 5 values form the channel, it works because the launched goroutines sends 5 values on it. This loop doesn't wait for the channel to be closed, so the loop can end, and so can the main() function.

That's why the sender should close the channel (not the receiver), and problem is solved immediately:

There's no conditional logic present in your code whether to change *reap based on the status of lock, or whether to wait for the status of lock to change before proceeding with the update to *reap. Therefore you're getting multiple goroutines increasing *reap with no synchronization between them.

Compare your implementation to the documented behavior of sync.Mutex, especially the block and wait behavior:

Lock locks m. If the lock is already in use, the calling goroutine blocks until the mutex is available.

Obviously not a good practice as pointed by vivek but you here is the code if you want to do anyway:

It's probably simpler to just not use One-Hot Encoding but instead use some arbitrary integer codes for the categories of a specific feature.

You can use pandas.factorize to integer-code categorical variables.

base.FixedDataGrid is an interface, so what you need to do is to implement that interface, that is, implement all of its methods, on the type you want to use as FixedDataGrid.

Since you want to use []dataStruct, a slice of dataStructs, which is an unnamed type, as FixedDataGrid you will have to declare a new type to be able to add methods to it because you can add methods only to named types. For example something like this:

Usually AsyncTask should not be complicated. Internally it is the thread and We use a thread only for specific task, so keep it as simple as possible and specific to that single task only.

If you want shared preferences values inside AsyncTask, pass those as parameters. It is simple and modular.