一次调用将 ArrayList.toString() 转换回 ArrayList [英] convert ArrayList.toString() back to ArrayList in one call

问题描述

我有一个 ArrayList 的 toString() 表示.

将 toString() 值复制到剪贴板，我想将它复制回我的 IDE 编辑器，并在一行中创建 ArrayList 实例.事实上，我真正在做的是:

• 我的 ArrayList.toString() 包含设置单元测试所需的数据.
• 我想将此 ArrayList.toString() 复制到我的编辑器中以针对此边缘情况构建测试
• 我不想手动解析任何东西

我的输入是这样的:

[15.82, 15.870000000000001, 15.92, 16.32, 16.32, 16.32, 16.32, 17.05, 17.05, 17.05, 17.02.1, 17.09, 16.32, 17.05, 17.05, 17.05, 17.05, 18.16,
以下不起作用:
Arrays.asList()
谷歌集合 Lists.newArrayList()
建议?
解决方案
Substring 花括号，在 、(逗号和空格)上拆分，最后将它提供给 Arrays#asList().
 String s = "[15.82, 15.870000000000001, 15.92, 16.32, 16.32, 16.32, 16.32, 17.05, 17.05, 17.05, 17.05, 17.8.2, 17.82列表<字符串>list = Arrays.asList(s.substring(1, s.length() - 1).split(", "));
请注意，这适用于您的特定情况，但并非适用于所有情况.例如，您可能有一个字符串列表，其中至少有一个包含后续逗号和空格.拆分将失败.
I have a toString() representation of an ArrayList.

Copying the toString() value to clipboard, I want to copy it back into my IDE editor, and create the ArrayList instance in one line.  In fact, what I'm really doing is this:


my ArrayList.toString() has data I need to setup a unit test.
I want to copy this ArrayList.toString() into my editor to build a test against this edge case
I don't want to parse anything by hand


My input looks like this:

[15.82, 15.870000000000001, 15.92, 16.32, 16.32, 16.32, 16.32, 17.05, 17.05, 17.05, 17.05, 18.29, 18.29, 19.16]


The following do not work:


Arrays.asList()
google collections Lists.newArrayList()


Suggestions?
解决方案
Substring the braces away, split it on , (comma and space) and finally feed it to Arrays#asList().
 String s = "[15.82, 15.870000000000001, 15.92, 16.32, 16.32, 16.32, 16.32, 17.05, 17.05, 17.05, 17.05, 18.29, 18.29, 19.16]";
 List<String> list = Arrays.asList(s.substring(1, s.length() - 1).split(", "));
Note that this will work in your particular case, but not in all circumstances. You may for example have a list of strings of which at least one contains a subsequent comma and space. The split would then fail.

                        
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