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iOS

Can I replace Indexes in Swift array?

can I replace Indexes in array? For example:

var todo = [ "Finish collection course", "Buy groceries", "Response to emails", "Order book online" "Pay bills" ]

If I want to move [0] on place of [2] and index [4] on place of index [1].

I dont know if I’ll ever need it but just curious.

There are different methods on doing this.. but as a quick answer. Yes

3 Answers

Here's one way:

var todo = [ "Finish collection course", "Buy groceries", "Response to emails", "Order book online", "Pay bills" ]

let temp = todo.removeAtIndex(0)  //take out the one you want to move
todo.insert(temp, atIndex: 1)  //insert it where you want it to go
print(todo)

The print output is:

["Buy groceries", "Finish collection course", "Response to emails", "Order book online", "Pay bills"]

Note: there's a comma missing between the last two elements of your array in the code you pasted in above.

Thanks. That's what I thought but I Wanted to know if there is some other easier (handy) way than "todo.removeAtIndex" and then "todo.insert"

Actually, there is, but you need to use inout parameters:

swap(&todo[0], &todo[1])

Great, that makes sense :) Thank you.