28 Feb '14, 9pm

Rails to iOS: What the *&@#^ are these symbols in my code?

For many developers with a background in Ruby or Python (or other similarly human-readable languages), the switch to Objective-C can be overwhelming because of the differences in syntax. Objective-C code tends to include non-alphanumeric characters, which are confusing to read if you’re not used to seeing them in your code. I’ll go through a few them here, to act as a small Rosetta Stone (Pebble?) as you start reading + writing Objective-C. @ – The @ sign is frequently found as a prefix to keywords (@implementation, @interface, @protocol, @end) that are used for defining classes. It’s a direction for the compiler – but as a programmer, it indicates to you where the implementation of your class (or its interface, or protocol) begins and ends. The @ sign is also found in front of numbers, strings, arrays, and dictionaries. It’s shorthand for creating these objects – consider...

Full article: http://pivotallabs.com/rails-ios-symbols-code/

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