Swift developers use FormatStyle to display numbers, dates, and currencies in a clear way. It is a protocol that makes formatting safe and easy. The result is human readable text that adjusts to the user's locale.
FormatStyle supports many data types. You can format integers, floating point numbers, percentages, durations, measurements, person names, byte counts, lists, and URLs. It also lets you create custom formats for your own data.
Always test your formatted output with different locales. Use locales like en_US, de_DE, or ja_JP to catch issues. This skill focuses on FormatStyle itself, not on broader localization topics.
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