Using a method that takes an NSError signifies utilizing an optional variable (a variable that may or may not exist) and the unwrapping the mistake if it exists.
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UITableViewDelegate: Invoked If your user has, one example is, selected a cell, or to find out what the peak of a row should be.
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Q: What exactly are some typical results in for inadequate efficiency in scrolling desk views? How can they be avoided?
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If You merely need a thumbnail dimension image, keep a more compact dimensions domestically. Similarly, utilize any intricate transforms into the graphic upfront if at all possible. website to hire ipad programmers Alternatively, accomplish the necessary operations around the picture off the principle thread after which refresh the cell after the picture is ready for display.