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authorruki <waruqi@gmail.com>2018-11-08 00:38:48 +0800
committerruki <waruqi@gmail.com>2018-11-07 21:53:09 +0800
commit26105034da4fcce7ac883c899d781f016559310d (patch)
treec459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/remove-array-items/index.js
parent2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff)
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Diffstat (limited to 'node_modules/remove-array-items/index.js')
-rw-r--r--node_modules/remove-array-items/index.js28
1 files changed, 28 insertions, 0 deletions
diff --git a/node_modules/remove-array-items/index.js b/node_modules/remove-array-items/index.js
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+'use strict'
+
+/**
+ * Remove a range of items from an array
+ *
+ * @function removeItems
+ * @param {Array<*>} arr The target array
+ * @param {number} startIdx The index to begin removing from (inclusive)
+ * @param {number} removeCount How many items to remove
+ */
+module.exports = function removeItems(arr, startIdx, removeCount)
+{
+ var i, length = arr.length
+
+ if (startIdx >= length || removeCount === 0) {
+ return
+ }
+
+ removeCount = (startIdx + removeCount > length ? length - startIdx : removeCount)
+
+ var len = length - removeCount
+
+ for (i = startIdx; i < len; ++i) {
+ arr[i] = arr[i + removeCount]
+ }
+
+ arr.length = len
+}