Swift中代码组织符号

Objective c中，一般使用pragma mark - 说明文字组织代码，在Swift中变了，如下所示

//MARK: - 说明文字
//FIXME: - 说明文字
//TODO: - 说明文字

函数注释

command + option + "/" 组合键给函数注释

查看函数注释

option + 鼠标左键 查看函数注释

Debug

Swift 有 #file, #function, #line and #column.
#file - String - The name of the file in which it appears.
#line - Int - The line number on which it appears.
#column - Int - The column number in which it begins.
#function - String - The name of the declaration in which it appears.