December 2015
Intermediate to advanced
400 pages
13h 3m
English
Content preview from Swift Programming: The Big Nerd Ranch Guide
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Unicode
Unicode is an international standard that encodes characters so they can be seamlessly processed and represented regardless of the platform. Unicode represents human language (and other forms of communication like emoji) on computers. Every character in the standard is assigned a unique number.
Swift’s String and Character types are built on top of Unicode and they do the majority of the heavy lifting. Nonetheless, it is good to have an understanding of how these types work with Unicode. Having this knowledge will likely save you some time and frustration in the future.
Unicode scalars
At their heart, strings in Swift are composed of Unicode scalars. Unicode scalars are 21-bit numbers that represent a specific character ...
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