Unlike XAML, you have the option of either passing in a function or defining the converter inline as an anonymous function.

和XAML不同的是，既可以把一个函数作为参数传入，也可以通过一个内联的匿名函数来定义转换器。

youdao

So now, henceforth, when you say, to declare a function, I am declaring a function here but down here am I quote unquote defining it or implementing it.

从此以后，当你说，声明一个函数，我在这里声明了一个函数，但是到这里我定义它或执行它。

youdao

The first block of code is obviously a function declaration, defining a function named ToggleSyntax , which takes no arguments.

显然，第一个代码块是一个函数声明，定义了名为ToggleSyntax的函数，它没有包含任何参数。

youdao

So in return to, we have a slight variance here, -- where I'm defining apparently -- declaring a function called cube.

作为应答，这里我们有一点变化，这里我显然定义了-,声明了一个叫做cube的函数。

哈佛公开课 - 计算机科学课程节选

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