我所说的“简单”是指少于5项且每次键值对少于10个的数据交换。
I take simple to mean less than ~ 5 data exchanges each with less than ~ 10 key, value pairs.
返回跟传递过来的键值或索引值相关的项。
删除在集合中，某一项相关联的键值。
Removed an item associated with the passed key fom the collection.
如果您的应用使用了apk’扩充文件，那返回值也包括文件名，文件大小，URL等。服务器在许可响应的”额外”领域作为键值对追加设置项。
If your application uses APK expansion files, the response also includes the file names, sizes, and URLs. The server appends the settings as key-value pairs in the license response "extras" field.
为集合里的每个键值执行指定的函数，传递每个键值作为第一参数和它相关的项作为第二参数。
Executes the specified function once for every key in the collection, passing each key, and its associated item as the first two parameters.
指定的键值相匹配的项包括在内。
Items for which the specified key values match are included.
删除在集合中，某一项相关联的键值。
返回与项相关的已传递的键值。
返回与项相关的已传递的键值。
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