I know that below are the two ways in J开发者_开发问答avaScript to check whether a variable is not null, but I’m confused which is the best practice to use.
根据11月23日季节性蜡烛的介绍，光遇游戏每天都会刷新新的季风蜡烛。这些季风蜡烛是玩家每天需要寻找的目标之一。今天就来看看11月23日大蜡烛的具体位置吧！让我们一起去发现。
I am fetching lots of thumbnails from a remote server and displaying them in a grid view, using AsyncTask. The problem is, my grid view displays 20 thumbnails at a time, so that creates 20 AsyncTasks
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