NEW STEP BY STEP MAP FOR CASPER77

命名参数和可选参数是两个比较简单的特性，对于熟悉其他编程语言的开发者来说可选参数并不陌生，为参数提供默认值时就是可选参数：Find the Verify box by Just about every type of file. (Be certain there’s absolutely nothing significant as part of your Recycle Bin in advance of emptying it.)Put i