字典是一种以键 - 值对形式存储数据的数据结构， 就像电话号码簿里的名字和电话号码一 样。 要找一个电话时， 先找名字， 名字找到了， 紧挨着它的电话号码也就找到了。 这里的 键是指你用来查找的东西， 值是查找得到的结果。 JavaScript 的 Object 类就是以 ...

数组不总是组织数据的最佳数据结构， 原因如下。 在很多编程语言中， 数组的长度是固定 的， 所以当数组已被数据填满时， 再要加入新的元素就会非常困难。 在数组中， 添加和删 除元素也很麻烦， 因为需要将数组中的其他元素向前或向后平移， 以反映 ...

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Uber drivers in Victoria have something now that no other gig workers in North America do: an honest-to-goodness collective agreement, nine months after they successfully voted to unionize. It took ...