Array as a dictionary value in swift language

Question

I have the following swift dictionary

var List = [

   2543 : [ "book", "pen" ],
   2876 : [ "school", "house"]
]

How can i access the array values ?

println(List[2543][0])

The above code gives error "could not find member subscript"

and it should print "book"

Sulthan · Accepted Answer · 2014-06-07 13:23:04Z

7

Note that subscript returns an optional. We have to force unwrapping:

println(list[2543]![0])

Or use optional chaining

println(list[2543]?[0])

answered Jun 7, 2014 at 13:23

Sulthan

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Comments

matt · Accepted Answer · 2014-06-07 13:24:16Z

3

println(list[2543]![0])

Remember, dictionary subscript returns an Optional, not an array or whatever is inside the dictionary value.

answered Jun 7, 2014 at 13:24

matt

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1 Comment

matt Over a year ago

The important thing to understand is that Optional is itself a type (an enum). It contains a value (or nil) inside itself, but you cannot talk directly to it as if it were the value.

iPatel · Accepted Answer · 2014-06-07 13:33:14Z

0

Just try with following code:

var dic = List[0];
println("values \(dic)")

OR

println(list[2543]![0])

edited Jun 7, 2014 at 13:33

answered Jun 7, 2014 at 13:22

iPatel

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