目录一、引言二、包的概念（一）包的定义与作用（二）JDK 中主要的包三、导入的概念（一）导入的目的与用法（二）特殊情况的导入四、补充知识点（一）静态导入（二）包的访问权限（三）包的命名规范五、总结一、引言
I\'m looking to suppress the output of one command (in this case, the apply function). Is it possible to do this without using sink()?I\'ve found the described solution below, b开发者_运维问答ut woul
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