Eclipse中的“Surround with”-template：foreach

问题描述

我是Eclipse的新手，我主要用于Java。我以前使用过IntelliJ Idea，它可以选择一个扩展Iteratable（Collection，List等）的变量，并产生一个正确的foreach循环。

我知道Eclipse与foreach模板类似，它猜测哪个变量要迭代，但是我不能将它与选定的变量相同。但是如果变量不在当前范围内，如果Eclipse猜测错误怎么办？

所以我想要做的是能够选择一个变量选择：

  functionWhichReturnsList（）（返回List< TypeOfItemsInList>）
  

结果：

（TypeOfItemsInList item：functionWhichReturnsList（））{
$ {cursor}
}

解决方案

我通常按​​照以下步骤创建这样的代码：

调用函数并使用Ctrl-1创建一个持有返回值的局部变量：

 列表< TypeOfItemsInList>列表= functionWhichReturnsList（）
  

输入前面的[Ctrl-space]插入for循环（由于eclipse通常在构建循环时选择最接近的迭代）：

 列表< TypeOfItemsInList> list = functionWhichReturnsList（）
 
 for（TypeOfItemsInList item：list）{
} 
  

通过将光标放在列表变量上并键入Alt + Shift + I来对局部变量进行内联：

  （TypeOfItemsInList item：functionWhichReturnsList（））{
} 
  

这不是最佳的， 。

I am new to Eclipse which I use primarily for Java. I have previously used IntelliJ Idea in which it is possible to select a variable which extends Iteratable (Collection, List etc) and have it produce a correct foreach loop.

I know Eclipse does something similar with the foreach template, where it guesses which variable to iterate over, but I can't get it to the same thing with a selected variable. But what if the variable is not in the current scope and what if Eclipse guesses wrong?

So what I am trying to do is being able to select a variable (or function which returns a variable) which implements Iterator and have it return:

Selection:

functionWhichReturnsList()   (which returns List<TypeOfItemsInList>)

Result:

for (TypeOfItemsInList item : functionWhichReturnsList()) {  
   ${cursor}  
}

Any ideas?

解决方案

I typically create code like this by following these steps:

Call the function and use Ctrl-1 to create a local variable holding the return value:

List<TypeOfItemsInList> list = functionWhichReturnsList()

Type fore[Ctrl-space] to insert the for loop (since eclipse usually chooses the closest iterable when constructing the loop):

List<TypeOfItemsInList> list = functionWhichReturnsList()

for (TypeOfItemsInList item : list) {
}

Inline the local variable by putting the cursor on the list variable and typing Alt+Shift+I:

for (TypeOfItemsInList item : functionWhichReturnsList()) {
}

It's not optimal, but it works.

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