我刚刚在R代码下面运行,但我得到了错误消息...谁能帮助我如何使这段代码在我的机器上可运行。谢谢。load(file = "c:\\abcdeXXX.RData")Error in if (!grepl("RD[AX]2\n", magic)) { : argument is of length zero
//确定该人的年龄是>= 13岁,还是由他们陪同var accompanied = prompt("Are you accompanied by an adult")
console.log("you may see the movie") console.log ("You can not see the movie"
如果s1是指f1.switch()创建的新对象,那么(1)变量runningStatus是如何传递给为内部类创建的新对象的?(2)变量runningStatus是如何在内部类的对象(由s1引用)中进行更改的,反映在f1引用的扇对象中?{ void off();{ public Switch getSwitch() return new Switch()