| 摘要 |
Some applications require the use of a long list of items. For example, an email application may have a long list of emails or an online banking application may have a long list of transactions. A problem arises, however, when there are many items in the list because it may take too long to download all of the data. To overcome this problem, a technology is proposed that creates a list with a placeholder for each of the elements in the list. As portions of the list are needed (or viewed), the relevant data is downloaded and used to populate the relevant items in the list.
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