因为这条语句：locs.remove(i); 你在循环的时候移除了元素，所以会报错。你不应该用for each，应该用迭代器。
ConcurrentHashMap 的所有操作都是线程安全 ConcurrentHashMap 返回的迭代器是弱一致性, fail-safe 并且不会抛出 ConcurrentModificationException 异常 ConcurrentHashMap 不允许 null 的键值 ConcurrentHashMap 可以代替HashTable,但 ConcurrentHashMap 不会锁住整个 Map...
1. Hashtable对get, put, removie都使用同步操作,影响了性能和吞吐量;concurrentHashMap只对put, remove 使用了同步操作,而get操作并不影响; 2. Hashtable在遍历时,如果有remove, put等操作,会抛出ConcurrentModificationException异常。而ConcurrentHashMap没有这方面的问题。 (七) ConcurrentSkipListMap 1. 概述 Con...
Hashtable与HashMap另一个区别是HashMap的迭代器(Iterator)是fail-fast迭代器,而Hashtable的enumerator迭代器不是fail-fast的。所以当有其它线程改变了HashMap的结构(增加或者移除元素),将会抛出ConcurrentModificationException,但迭代器本身的remove()方法移除元素则不会抛出ConcurrentModificationException异常。但这并不是一...
However, some or all may be subject to considerable modification when the reductions are completed.Between October 1, 1933, and April 30, 1934, aurorae were seen on all except 53 nights, and of these 43 were continuously overcast so that an aurora could not have been seen visually. The ...
Avertissement :Toute modification incorrecte du Registre à l’aide de l’Éditeur du Registre ou d’une autre méthode peut entraîner des problèmes sérieux. Ces problèmes peuvent vous obliger à réinstaller le système d’exploitation. Microsoft...
P. A modification of receptor theory. Br J Pharmacol Chemother 11, 379–93 (1956). 17. Onaran, H. O., Rajagopal, S. & Costa, T. What is biased efficacy? Defining the relationship between intrinsic efficacy and free energy coupling. Trends Pharmacol Sci 35, 639–47 (2014). 18. ...
4A). The pSer(409/410) post-translational modification was chosen due to extensive findings that it is detected in TDP-43 neuropathology27,28,29,30. Interestingly, both TDP-43 and pTDP43 electropherograms showed different patterns in platelets from ALS samples compared to those from healthy ...
To achieve this relaxation of the macula, surgery can be performed ab interno using vitrectomy, with or without the aid of an external modification of the scleral curvature at the fovea, thus bringing the two structures closer together. Pars plana vitrectomy (23-gauge) is a proven approach to...
L’énumérateur est invalidé en raison de modifications apportées à la collection, telles que l’ajout, la modification ou la suppression d’éléments. Current retourne le même objet jusqu'à ce que MoveNext soit appelé. MoveNext affecte l'élément suivant à Current. S’applique à Pro...