iOS and Swift tips

All shorter tips aimed at iOS and Swift developers.

Dealing with file extensions and Uniform Type Identifiers

Simpler categories when using OSLog

Map the keys of a dictionary to a different type

Using anchors to match a parent view's constraints

Animating view colour changes

Create time intervals with explicit units

Protocol functions with default parameter values

Access the call site of a function using special Swift literals

Safely index items within a collection

Sharing accessibility identifiers between app and tests

Protocol function that returns the Self type

Using metatype Self to return current type

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