Remove current object from array in Swift [duplicate]

Question

I am looping through an array with the following code:

for leftBlock in leftBlocks {
    // ...
}

I'm doing some comparisons inside of that for-loop, and in some cases I need to remove the current leftBlock from the array. I know how to remove if I have the index, but in this case, I don't.

How do I delete the current object from the array?

Use either find or filter

Jack
– Jack

2014-08-07 19:53:35 +00:00
Commented Aug 7, 2014 at 19:53 — Jack
– Jack, Commented Aug 7, 2014 at 19:53

malex · Accepted Answer · 2014-08-07 21:05:39Z

1

Use enumerate function which returns a tuple for each value in the array:

for (index,leftBlock) in enumerate(leftBlocks.copy()) {

}

Now you can remove object by its index from original array leftBlocks.

edited Aug 7, 2014 at 21:05

answered Aug 7, 2014 at 19:53

malex

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4 Comments

zaph Over a year ago

Is it safe to modify an Array that is bring enumerated in Swift?

malex Over a year ago

@Zaph, thanks, forgot to write copy() for original array. Of course, it is impossible to change array being enumerated.

zaph Over a year ago

It is possible but perhaps not safe in Swift, I'm not sure about safe.

malex Over a year ago

@Zaph, obviously it is not a good scheme to implement. The main goal of my post was to show how one can get index in for-in iteration.

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