empty set
常见例句
- Start from scratch: Start with an empty set of conditions and add your own.
从头开始:从一组空的条件开始并添加您自己的条件。 - This occurs because the fields are empty, so we are actually multiplying nothing by nothing (or empty set by empty set).
之所以会出现这个问题是由于字段是空的,因此实际上进行的计算是零乘零(或者空集乘空集)。 - When you invoke a Groovy method that has no parameters, you must call it with an empty set of parentheses, which allows Groovy to distinguish between a property access from a method call.
当您调用一个没有参数的 Groovy 方法时,您必须使用一对空括号调用它,这使得 Groovy 可以分清一个属性访问和一个方法调用之间的区别。 - Possibly an empty set of constraints.
约束条件得出的也可能是空值。
麻省理工公开课 - 计算机科学及编程导论课程节选 - Picture this: a stately room full of empty chairs set up two rows deep in a semi circle.
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ECONOMIST: Now, it seems, even the bird-brained have theories of mind 返回 empty set