在Haskell程序中,可以用许多不同的方式组合函数。
You can combine functions in many different ways within Haskell programs.
针对组合函数,文中给出了线性统计独立性的概念。
The concept of linear statistical independence is defined for the combination function.
请避免使用多层嵌套函数调用,使用组合函数去替代。
Avoid multiple nested function calls. Use composition instead.
It shows the standard deviation of the return on the portfolio as a function of the expected return on the portfolio.
它是投资组合的收益标准差,关于预期收益率的函数图像。
All right. So, let's look at this in another way, sometimes it's hard to picture these waves combining.
好的,让我们从另外一个方面来看,有时候很难想象这些波函数的组合。
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