Kotlin Collections First (NoSuchElementException) Or FirstOrNull (Nullable Result)

Apr 17, 2018
kotlin.collections first expect a result to be returned, else NoSuchElementException shall be raised.

kotlin.collections first expect a result to be returned, else NoSuchElementException shall be raised.

val sku = "xxx"try {    val item = items.first {        it.sku == sku    }}catch (e: NoSuchElementException) {    // do something}

If you want a first to return null if not found, use firstOrNull.

val sku = "xxx"val item = items.firstOrNull {    it.sku == sku}if (item == null) {    // so something}

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