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iOS

Posted by Siddharth Doshi
Siddharth Doshi
3,547 Points

Error in challenge 2/2 in What is an Array? Swift

Q : Print out the number of items in the todo array using println. A : 

var todo = ["Learn Swift","Build App","Deploy App"]

println("\(todo.count)")

Bummer! Try again!
Tunde Adegoroye
Tunde Adegoroye
20,597 Points

You need to remove the quotes sorry since its turning the function call into a string my bad

This will fix it :)

Siddharth Doshi
Siddharth Doshi
3,547 Points

I have use the backslash println("(todo.count)")

Tunde Adegoroye
Tunde Adegoroye
20,597 Points

I have updated my comment sorry i read the post wrong remove the "" since you use that if you want to print a string in this case you want to use a function on a variable and it will return a value so you don't need to put the quotes around it

Siddharth Doshi
Siddharth Doshi
3,547 Points

its ok but i have try it without quotes also but no use

Siddharth Doshi
Siddharth Doshi
3,547 Points

Thanks problem solved.

3 Answers

Ricardo Hill-Henry
Ricardo Hill-Henry
38,442 Points

The Treehouse compiler doesn't want this message. The reason is, using interpolation here isn't really needed. When you're printing the value of a variable by itself using println, there's no need to interpolate since the value is a number, not being explicitly included within a string. The code you're using would work in XCode however, if you include a backslash.

println(todo.count)
Jason Almenas
Jason Almenas
922 Points
Jason Almenas
Jason Almenas
922 Points

Thanks for that, I was over complicating the answer and now that I see that it makes more sense.

petri foxx
petri foxx
336 Points
petri foxx
petri foxx
336 Points

correct answer is println (todo.count)