这意味着大部分字符串—包括大部分非空字符串—将被计算为false。

This implies that the vast majority of strings-including most non-empty strings-will evaluate as being false. A typical mistake is to test for an empty string like so.

youdao

数据库名称无效。需要非空字符串。请输入使用有效字符的名称，然后重试。

Invalid database name. A non-empty string was expected. Enter a name using valid characters and try again.

youdao

如果页面动作方法调用返回一个非空字符串值，则Seam将其当作一个导航事件。

If a page action method invocation returns a non-null string value, Seam treats it as a navigation event.

youdao