一.continue的使用方法(结束当前的循序,进行下一个数的循环) # ***************************************************************************** # This is a program to illustrate the useage of continue in Python. # If you want to stop executing the current iteration of the loop a…
方法1: function clone(obj){ var o; switch(typeof obj){ case 'undefined': break; case 'string' : o = obj + '';break; case 'number' : o = obj - 0;break; case 'boolean' : o = obj;break; case 'object' : if(obj === null){ o = null; }else{ if(obj instanceof…
DataTable分组统计: .用两层循环计算,前提条件是数据已经按分组的列排好序的. DataTable dt = new DataTable(); dt.Columns.AddRange(new DataColumn[] { new DataColumn("name", typeof(string)), new DataColumn("sex", typeof(string)), new DataColumn("score", typeof(…
方法一: // 计算系统当前是星期几 var str = "今天是星期" + "日一二三四五六".charat(new date().getday()); 方法二: var a = new array("日", "一", "二", "三", "四", "五", "六"); var week = new date().getday…