what’s a kotliny way of using `find` to find the one and only item in a list where I know there is n...

# getting-started

[oday]

what’s a kotliny way of using find to find the one and only item in a list where I know there is no repetition with, according to its ID?

[diesieben07]

single?

[oday]

ahh

[diesieben07]

That returns the item that matches and throws an exception if there is 0 or more than one that match

[oday]

everytime i think i got it, i miss another thing 😛

[diesieben07]

There is also singleOrNull if you want null in case no item matches

[oday]

to ensure an item exists, i would use this then if (leaseCars.singleOrNull { it.id == listingId } != null)

[diesieben07]

that would check that a singular item with that ID exists, yes.

[diesieben07]

That won't throw an exception if multiple items have the same ID though, it will give you null.