Refactor OSM opening hour parsing

Fix #1368
2025-04-18 22:10:32 +02:00
parent 8ba988c929
commit 30f11565cf
2 changed files with 172 additions and 101 deletions
@@ -9,6 +9,28 @@ fun <T,V> Iterable<T>.flatMapNotNull(transform: (T) -> Iterable<V>?) : List<V> {
    return destination
 }

+/**
+ * Converts an Iterable of pairs into a Map where the keys are the first elements of the pairs
+ * and the values are lists of the second elements of the pairs.
+ *
+ * For example, given the input:
+ * ```
+ * val pairs = listOf(
+ *    "a" to 1,
+ *    "b" to 2,
+ *    "a" to 3,
+ *    "c" to 4,
+ * )
+ * ```
+ * the output will be:
+ * ```
+ * mapOf(
+ *   "a" to listOf(1, 3),
+ *   "b" to listOf(2),
+ *   "c" to listOf(4),
+ * )
+ * ```
+ */
 fun <T,V> Iterable<Pair<T, V>>.toMultiMap() : Map<T, List<V>> {
    val destination = mutableMapOf<T, MutableList<V>>()
    for ((k, v) in this) {