Threads A thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system.
Threads A thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system.
Threads A thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system.
Threads A thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system.
What is main thread? it is in charge of dispatching events to the appropriate user interface widgets, including drawing events. It is also almost always the thread in which your application interacts with components from the Android UI toolkit (components from the android.widget and android.view packages)
MessageQueue Low-level class holding the list of messages to be dispatched by a Looper. Messages are not added directly to a MessageQueue, but rather through Handler objects associated with the Looper.
MessageQueue Low-level class holding the list of messages to be dispatched by a Looper. Messages are not added directly to a MessageQueue, but rather through Handler objects associated with the Looper. 🤔
postAtFrontOfQueue() Posts a message to an object that implements Runnable. This method is only for use in very special circumstances -- it can easily starve the message queue, cause ordering problems, or have other unexpected side-effects.
postDelayed() Causes the Runnable r to be added to the message queue, to be run after the speci fi ed amount of time elapses. The time-base is SystemClock.uptimeMillis()
postAtTime() Causes the Runnable r to be added to the message queue, to be run at a speci fi c time given by uptimeMillis. The time-base is SystemClock.uptimeMillis()
ExecutorService An Executor that provides methods to manage termination and methods that can produce a Future for tracking progress of one or more asynchronous tasks.
ExecutorService An Executor that provides methods to manage termination and methods that can produce a Future for tracking progress of one or more asynchronous tasks.
ExecutorService An Executor that provides methods to manage termination and methods that can produce a Future for tracking progress of one or more asynchronous tasks.
Future A Future represents the result of an asynchronous computation. Methods are provided to check if the computation is complete, to wait for its completion,
Future A Future represents the result of an asynchronous computation. Methods are provided to check if the computation is complete, to wait for its completion, and to retrieve the result of the computation.
Observer pattern A software design pattern in which an object, named the subject, maintains a list of its dependents, called observers, and notifies them automatically of any state changes, usually by calling one of their methods.
Observer pattern It is mainly used for implementing distributed event handling systems, in "event driven" software. In those systems, the subject is usually named a "stream of events" or "stream source of events",
Observer pattern It is mainly used for implementing distributed event handling systems, in "event driven" software. In those systems, the subject is usually named a "stream of events" or "stream source of events",
Observer pattern It is mainly used for implementing distributed event handling systems, in "event driven" software. In those systems, the subject is usually named a "stream of events" or "stream source of events",
Observer pattern It is mainly used for implementing distributed event handling systems, in "event driven" software. In those systems, the subject is usually named a "stream of events" or "stream source of events",
Flow Using the List result type, means we can only return all the values at once. To represent the stream of values that are being asynchronously computed, we can use a Flow type just like we would use the Sequence type for synchronously computed values
Flows are cold Flows are cold streams similar to sequences — the code inside a flow builder does not run until the flow is collected. This becomes clear in the following example:
Flows are cold This is a key reason the simple function (which returns a flow) is not marked with suspend modifier. By itself, simple() call returns quickly and does not wait for anything. The flow starts every time it is collected, that is why we see "Flow started" when we call collect again.
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