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Title: Waiting for God — Audrey fforbes-Hamilton is sad when her husband dies but is shocked when she realises that she has to leave Grantleigh Manor where her family has lived forever. The new owner is Richard De The Korean War and a long lost letter separate the lives of young lovers Jean and Lionel, whose paths cross again by happenstance. A snobbish housewife is determined to climb the social ladder, in spite of her family's working class connections and the constant chagrin of her long suffering husband.

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The perils of "escaping the rat race" and dropping out of society - to start a farm in Surbiton and to drive Margo nuts. A boisterous female minister comes to serve in an eccentricly conservative small town's church. Ria, a happily married suburban housewife, reaches the age where she feels as if life is passing her by.

4. Waiting on the Lord (2 Samuel ) |

Being taken for granted by her butterfly collecting dentist husband doesn't help. Victor Meldrew is a retiree who attracts bad luck. If he's not driving his long suffering wife Margaret crazy with his constant moaning, he's fighting with neighbors. A rather naive, middle-class man is admitted to a hospital ward and finds that he is sharing it with a working-class layabout and an upper-class hypochondriac.

All three of them cause headaches for the hospital staff. Comic goings on in this series set in an English holiday camp called Maplins. The title comes from the camp's greeting, which the staff are meant to say with enthusiasm but all too often When Tom Ballard moves to Bayview Retirement Vilage, he meets Diana Trent, a feisty old woman who complains about everything and wants nothing more than just to die.

Much to the dislike of Harvey Baines, the head of the home, the two form a friendship and eventually a romance, helping each other out of tight situations. Tom's son, Geofrey, and daughter-in-law, Marion whom Tom doesn't particularly like are constantly stopping in and Jane, a worker at the home, is Diana's worst nightmare being constantly cheerful. Together, though, Tom and Diana make it together while they are waiting for God. I have been waiting for some time for this to appear on DVD and here it is. Loved it when it first appeared, like it even more now.

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Diana is a role model, ie just the sort of person I want to be when my children do what they threaten, and put me in a home, and Tom would be an irritating but useful companion. Our bodies may give out on us, but the brain does not always follow suit, and from this we get this glorious programme. Jane, the long suffering P. Not to forget the randy little chap Bas? Truly a TV sitcom of brilliance.

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Chernobyl (2019) - Official Trailer - HBO

Find showtimes, watch trailers, browse photos, track your Watchlist and rate your favorite movies and TV shows on your phone or tablet! IMDb More. Keep track of everything you watch; tell your friends. Full Cast and Crew. Release Dates. Official Sites. Company Credits. Technical Specs. Episode List. Plot Summary. Plot Keywords. Parents Guide. External Sites. User Reviews. User Ratings. External Reviews. Metacritic Reviews. Photo Gallery. Trailers and Videos. Crazy Credits. Alternate Versions. Rate This.

Episode Guide. Much to the dislike of Top-Rated Episodes S5. Error: please try again. TV shows to watch. In iOS, a process or application consists of one or more threads. The operating system scheduler manages the threads independently of each other. Single-core devices achieve concurrency through a method called time-slicing.

They run one thread, perform a context switch, then run another thread. Multi-core devices, on the other hand, execute multiple threads at the same time via parallelism. GCD is built on top of threads.

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Under the hood it manages a shared thread pool. This then allows you to use GCD to take advantage of concurrent execution. Note that GCD decides how much parallelism it requires based on the system and available system resources. Dispatch queues are thread-safe which means that you can access them from multiple threads simultaneously.

Waiting for Hope

The benefits of GCD are apparent when you understand how dispatch queues provide thread safety to parts of your own code. The key to this is to choose the right kind of dispatch queue and the right dispatching function to submit your work to the queue. Queues can be either serial or concurrent. Serial queues guarantee that only one task runs at any given time. GCD controls the execution timing. Concurrent queues allow multiple tasks to run at the same time. The queue guarantees tasks start in the order you add them. Tasks can finish in any order and you have no knowledge of the time it will take for the next task to start, nor the number of tasks that are running at any given time.

Notice how Task 1, Task 2, and Task 3 start quickly one after the other. On the other hand, Task 1 took a while to start after Task 0. Also notice that while Task 3 started after Task 2, it finished first. The decision of when to start a task is entirely up to GCD. Instead, you specify a Quality of Service QoS class property.

A synchronous function returns control to the caller after the task completes. You can schedule a unit of work synchronously by calling DispatchQueue. An asynchronous function returns immediately, ordering the task to start but not waiting for it to complete. Thus, an asynchronous function does not block the current thread of execution from proceeding on to the next function. You can schedule a unit of work asynchronously by calling DispatchQueue. For the purposes of this tutorial you can consider a task to be a closure.

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Closures are self-contained, callable blocks of code you can store and pass around. You can configure the behavior of a DispatchWorkItem such as its QoS class or whether to spawn a new detached thread.

Grand Central Dispatch Tutorial for Swift 4: Part 1/2

Head back to the app and add some photos from your Photo Library or use the Le Internet option to download a few. Tap on a photo. Notice how long it takes for the photo detail view to show up. The lag is more pronounced when viewing large images on slower devices. Open PhotoDetailViewController. Modify viewDidLoad and replace these two lines:. In two spots, you add [weak self] to capture a weak reference to self in each closure. Build and run the app. Download photos through Le Internet option. This lends a nice before and after effect to the app as the googly eyes appear.

In general, you want to use async when you need to perform a network-based or CPU-intensive task in the background and not block the current thread. DispatchQueue allows you to delay task execution. Instead, use this when you want a task to run at a specific time. Consider the user experience of your app for a moment. If you display a prompt too quickly, they might miss it as their eyes linger on other parts of the view. Open PhotoCollectionViewController.

Why not use Timer? You could consider using it if you have repeated tasks which are easier to schedule with Timer. One is readability. To use Timer you have to define a method, then create the timer with a selector or invocation to the defined method. With DispatchQueue and asyncAfter , you simply add a closure.

Timer is scheduled on run loops so you would also have to make sure you scheduled it on the correct run loop and in some cases for the correct run loop modes. In this regard, working with dispatch queues is easier. This concern is justified given their use: singletons are often used from multiple controllers accessing the singleton instance at the same time. Thread safe code can be safely called from multiple threads or concurrent tasks without causing any problems such as data corruption or app crashes.

Code that is not thread safe can only run in one context at a time. There are two thread safety cases to consider: during initialization of the singleton instance and during reads and writes to the instance. Initialization turns out to be the easy case because of how Swift initializes static variables. It initializes static variables when they are first accessed, and it guarantees initialization is atomic.

That is, Swift treats the code performing initialization as a critical section and guarantees it completes before any other thread gets access to the static variable. A critical section is a piece of code that must not execute concurrently, that is, from two threads at once.

The private initializer makes sure that the only PhotoManager is then one assigned to shared. You still have to deal with thread safety when accessing code in the singleton that manipulates shared internal data. You can handle this through methods such as synchronizing data access. In Swift, any variable declared with the let keyword is a constant and, therefore, read-only and thread-safe. Declare the variable with the var keyword however, and it becomes mutable and not thread-safe unless the data type is designed to be so. The Swift collection types like Array and Dictionary are not thread-safe when declared mutable.

The caller gets a copy of the array and is protected against mutating the original array inappropriately. Passing by value results in a copy of the object, and changes to the copy will not affect the original. By default in Swift, class instances are passed by reference and struct s are passed by value.

The Swift collection types are optimized to make copies only when necessary, for instance, when your app modifies an array passed by value for the first time. This is the classic software development Readers-Writers Problem.