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iOS Swift Basics (retired) Operators Unary Operators

Posted by Ingrid Stevens
Ingrid Stevens
1,651 Points

You can initialize a variable without giving it a value

In the video at 00:54 you said "Because we can't just create a variable and not provide it with an initial value, because it needs to know whether it's an integer or a double or a float or a Boolean."

You can initialize a variable in swift without giving it a value because you can specify the type. For example:

var welcomeMessage: String var red, green, blue: Double

See documentation: https://developer.apple.com/library/mac/documentation/swift/conceptual/swift_programming_language/TheBasics.html#//apple_ref/doc/uid/TP40014097-CH5-XID_467

Ezekiel Elin
Ezekiel Elin
3,839 Points

Technically true, however if you don't specify the types, you must provide the value. At this point in the course I don't believe types have been touched on much.

1 Answer

Marlon Henry
Marlon Henry
6,885 Points
Marlon Henry
Marlon Henry
6,885 Points

Based on your message example you would actually do var welcomeMessage: String() the whole explicit type thing and all.