![]() (“thirty-two point three three - repeating, of course…”), To prevent numbers from getting annoyingly pedantic That takes a familiar SPRINTF(3)-style format string.įormat strings are something to be avoided unless absolutely necessary. Number Formatter also has a format property The first order of business is to establishĪnd set the number Style property accordingly. So whenever you reach for Number Formatter, It can even write out numbers in a few different languages! Number Formatter covers every aspect of number formatting imaginable. These formatters provide conversion and interoperability The only occasions in which you might still useĮnergy Formatter, Mass Formatter, or Length FormatterĪre when working with the HealthKit framework Into one of four categories: Numbers and Quantities Number Formatter Measurement Formatter Dates, Times, and Durations Date Formatter ISO8601Date Formatter Date Components Formatter Date Interval Formatter Relative Date Time Formatter People and Places Person Name Components Formatter CNPostal Address Formatter Lists and Items List FormatterĪre superseded by Measurement Formatter. This week’s article groups each of the built-in formatters That it’s impossible to keep them all in working memory.Īpparently, this is as true of computers as it is for humans There are so many formatters in Apple SDKs Or otherwise superseded by more capable APIs (that are also formatters). Physical quantities and time intervals to personal names and postal addresses.Īnd as if that weren’t enough to keep straight, Much of the API design of (NS)Formatter reflects this.įormatters came in two flavors: dates and numbers. Tables, form fields, and other views in AppKit. Which is used to display information and accept user input in That’s responsible for transforming data into textual representations.įormatter’s origins trace back to NSCell, Making data human-readable is an essential task -Ī user’s preferred language, calendar, and currencyĬan all factor into how information should be displayed,Īs can other constraints, such as a label’s dimensions.Ĭalling description on an object just doesn’t cut itĪn ancient, abstract class deep in the heart of the Foundation framework Transforming data into something more useful. ![]() ![]() Most programs boil down to some variation of ![]() Conversion is a tireless errand in software development. ![]()
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