The ListValuesUtility class has static data source reference.

ListValuesUtility 类具有静态数据源引用。

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The TIFF image standard provides an open source reference implementation.

TIFF图像标准提供了一个开源参考实现。

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It creates the data source reference for the first time and USES that same reference for subsequent requests.

它为第一次请求创建数据源引用，并为后续请求使用此引用。

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For programmers, the perfect book is a source of reference, that provides examples and acts as a stepping-stone that raises you to the next level.

FORBES: Dummy books are for dummies

Already, thousands of pictures have been deposited in the Herschel archive, which is set to become a key reference source for decades into the future.

BBC: Herschel space telescope to go blind

Bizarrely, one of Dr Lomborg's critics in Scientific American criticises as an affectation the book's insistence on documenting every statistic and every quotation with a reference to a published source.

ECONOMIST: ��The Skeptical Environmentalist��