Select
 Usage
• Select[list, crit] 选取 list 中使得 crit[ ] 为 True 的所有元素  . • Select[list, crit] 选取 list 中使得 crit[ ] 为 True 的前 n个元素.
Notes
• list 可以具有任意头, 而不必是 List.
 Further Examples
This selects the even numbers from the list.
In[1]:=
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Out[1]=
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This selects those numbers in the list that are greater than 10.
In[2]:=
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Out[2]=
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