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qwen/nodejs/node_modules/lodash/unzip.js

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+var arrayFilter = require('./_arrayFilter'),
+    arrayMap = require('./_arrayMap'),
+    baseProperty = require('./_baseProperty'),
+    baseTimes = require('./_baseTimes'),
+    isArrayLikeObject = require('./isArrayLikeObject');
+
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeMax = Math.max;
+
+/**
+ * This method is like `_.zip` except that it accepts an array of grouped
+ * elements and creates an array regrouping the elements to their pre-zip
+ * configuration.
+ *
+ * @static
+ * @memberOf _
+ * @since 1.2.0
+ * @category Array
+ * @param {Array} array The array of grouped elements to process.
+ * @returns {Array} Returns the new array of regrouped elements.
+ * @example
+ *
+ * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
+ * // => [['a', 1, true], ['b', 2, false]]
+ *
+ * _.unzip(zipped);
+ * // => [['a', 'b'], [1, 2], [true, false]]
+ */
+function unzip(array) {
+  if (!(array && array.length)) {
+    return [];
+  }
+  var length = 0;
+  array = arrayFilter(array, function(group) {
+    if (isArrayLikeObject(group)) {
+      length = nativeMax(group.length, length);
+      return true;
+    }
+  });
+  return baseTimes(length, function(index) {
+    return arrayMap(array, baseProperty(index));
+  });
+}
+
+module.exports = unzip;