fix for paginate (again) and lastIndexExclusive

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 * `Pagination`
     * Fixes in function `List#paginate`
+    * Extension property `Pagination#lastIndexExclusive`
 
 ## 0.2.5
 

pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/Pagination.kt

@@ -28,6 +28,15 @@ interface Pagination {
 val Pagination.firstIndex: Int
     get() = page * size
 
+/**
+ * Last number in index of objects. In fact, one [Pagination] object represent data in next range:
+ *
+ * [[firstIndex], [lastIndex]]; That means, that for [Pagination] with [Pagination.size] == 10 and [Pagination.page] == 1
+ * you will retrieve [Pagination.firstIndex] == 10 and [Pagination.lastIndex] == 19. Here [Pagination.lastIndexExclusive] == 20
+ */
+val Pagination.lastIndexExclusive: Int
+    get() = firstIndex + size
+
 /**
  * Last number in index of objects. In fact, one [Pagination] object represent data in next range:
  *
@@ -35,7 +44,7 @@ val Pagination.firstIndex: Int
  * you will retrieve [Pagination.firstIndex] == 10 and [Pagination.lastIndex] == 19.
  */
 val Pagination.lastIndex: Int
-    get() = firstIndex + size - 1
+    get() = lastIndexExclusive - 1
 
 /**
  * Calculates pages count for given [datasetSize]

pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/utils/IterableExtensions.kt

@@ -21,7 +21,7 @@ fun <T> Iterable<T>.paginate(with: Pagination): PaginationResult<T> {
 }
 
 fun <T> List<T>.paginate(with: Pagination): PaginationResult<T> {
-    return subList(maxOf(with.firstIndex, 0), (minOf(with.lastIndex, lastIndex)) + 1).createPaginationResult(
+    return subList(maxOf(with.firstIndex, 0), minOf(with.lastIndexExclusive, size)).createPaginationResult(
         with,
         size.toLong()
     )