Listing 4 illustrates applying the collect method to a List and a Map.
清单4演示了把collect方法应用于List和Map。
Map and grep evaluate a block or an expression for each element of a list.
Map和grep对列表的每个元素计算块或表达式。
We can check whether any speed differences exist between map , list comprehensions, and traditional loops.
我们可以看出map方法、list comprehension和传统循环方法之间的速度差别。
Certainly the map() function, list-comprehensions, and more recently generator-comprehensions, let you do elementwise application.
当然，map()函数、列表内涵（list-comprehension）和最近的生成器内涵（generator-comprehension 都可以让您实现elementwise应用。
From the Mappings window, map top to the output list, and then click Auto map.
从Mappings窗口，将top映射到输出列表，然后单击autoMap。
From the Mappings window, map top to the output list, and then click Auto map.
从Mappings窗口，将top映射到输出列表，然后单击autoMap。
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