The application fetches the location of the device on launch and it subsequently asks the Dark Sky API for weather data for that location. That's fine, but it isn't sufficient. What happens if the user backgrounds the application and opens it several hours later. The weather data may be out of date and, if they're traveling, the location of the device may have changed.
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Building a Weather Application From Scratch
Efficiently Refreshing Weather Data
by Bart Jacobs in Swift
Swift 4
Xcode 9
iOS 11
Building a Weather Application From Scratch
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03:30
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07:15
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12:08
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05:59
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07:54
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13:09
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13:56
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12 Organizing Fonts and Colors
06:45
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13 Implementing the Day View Model
15:55
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15 Implementing the Week View Model
12:37
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20 Efficiently Refreshing Weather Data
08:48
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09:40
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22 Unit Testing With Mock Objects
10:49
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23 Unit Testing Asynchronous Code
06:40
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08:28
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25 Exposing Gaps in the Test Suite
04:00