目录一、列出所有环境变量二、清除所有环境变量三、检索环境变量四、获取环境变量五、设置环境变量六、删除环境变量七、展开环境变量Go标准库提供了非常多实用的功能，其中就包含了操作环境变量。
I\'m wondering if someone can help me out. I entered a character into a text area from a button, and want to use the string entered into the textarea t开发者_JAVA技巧o retrieve words from a list. Bear
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