DelayAction. The design and implementation of the target method pretest model. 目标方法前置检验模型设计与实现，应用于所有需要在目标操作前插入N个前置验证条件的情况（如：登录后自动执行关注、登录后继续上次的发帖操作）

Problem

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Audience

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Market

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Pricing

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