同时,研发人员的平均值持续增长,中位数则在波动中下滑,这一现象再次呼应“整体扩张、结构分化”的特征。也就是说,研发人才作为核心战略资源,与研发资金一样具有强烈的“马太效应”,都向技术雄厚、资金充足的头部企业集中。
For instance, let’s say we’re programming a module that controls an electrical gate of a canal lock. If the public API was to require a voltage value needed for the engine to lift the gate - that would violate the Information Hiding a great deal. First of all, the user of the module would need to know the details of the engine. Second of all, changing the gate to a pneumatic one would completely break all the code that uses the module. In terms of software design the equivalent violation would be to catch SqlException in the Business-Module. If I were to propose an implementation that leverages Information Hiding, it would be to accept the opening ratio instead of the voltage.
,更多细节参见safew官方下载
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