When explicit type information for variables is written in the code, these type annotations follow the colon after the item name (i.e., Pascal-like syntax).
当在代码里显式地为变量指定类型信息时，类型注解应该跟在变量名的冒号后面(也就是类pascal语法)。
You would have to code a different function for each type of item you wanted to swap.
对于每种需要交换的类型来说，都需要定义一个不同的函数。
You would have to code a different function for each type of item you wanted to swap.
对于每种需要交换的类型来说，都需要定义一个不同的函数。
应用推荐