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Say I have something like
let a = <some-complicated-expression>
Is there any way within Xcode to check which type the compiler has inferred for a?
EDIT: \
For example, in the Eclipse Scala IDE, by hovering over the variable name the editor would show the inferred type
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Swift uses type inference extensively, allowing you to omit the type or part of the type of many variables and expressions in your code. For example, instead of writing var x: Int = 0 , you can write var x = 0 , omitting the type completely—the compiler correctly infers that x names a value of type Int .
Yes, it's the empty tuple, aka Void . The standard Void type is defined as: typealias Void = () The return type of functions that don't explicitly specify a return type; an empty tuple (i.e., () ).
In Swift, you can print a variable or a constant to the screen using the print() function. Let's see that in action by creating a playground file, as you learned in the last lesson. After creating your new playground in Xcode, start by declaring three strings representing your favorite word, color, and musician.
Yes. Alt click the variable and you'll get a pop over with the type.
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