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winform导出datagridview数据到excle
if (dgvResult.Rows.Count == 0) { MessageBox.Show("列表为空"); } //创建Excel对象 Microsoft.Office.I...
分类:Windows程序   时间:2014-08-14 20:25:29    阅读次数:242
oc之指针
1、基础* : 简接寻址运算符& : 地址运算符int count = 10; //定义变量count,赋初始值10;int *intPtr; //*定义变量inPtr是int的指针类型intPtr = &count; //表达式&count表示变量count的指针,将它赋值给指针变量intP...
分类:其他好文   时间:2014-08-14 19:51:09    阅读次数:161
获取checkbox 组成字符串
1234$str_tag="";$s=$_POST['goods_server_name'];for($i=0;$i<count($s);$i++){ if($i==0){ $str_tag = $s[$i]; }else{ $str_tag = $str_tag .",".$s[$...
分类:其他好文   时间:2014-08-14 16:35:48    阅读次数:166
非结构体线段树版 ZJU 1610 Count the Colors (线段树区间更新)
Painting some colored segments on a line, some previously painted segments may be covered by some the subsequent ones. Your task is counting the segments of different colors you can see at last. ...
分类:其他好文   时间:2014-08-14 10:47:38    阅读次数:222
【DataStructure】Charming usage of Set in the java
In an attempt to remove duplicate elements from list, I go to the lengths to take advantage of  methods in the java api. After investiagting the document of java api, the result is so satisfying that ...
分类:编程语言   时间:2014-08-14 01:30:17    阅读次数:256
mysql中判断记录是否存在方法比较【转】
把数据写入到数据库的时,常常会碰到先要检测要插入的记录是否存在,然后决定是否要写入。我这里总结了判断记录是否存在的常用方法:sql语句:select count(*) from tablename;然后读取count(*)的值判断记录是否存在。对于这种方法性能上有些浪费,我们只是想判断记录记录是否存...
分类:数据库   时间:2014-08-14 01:15:07    阅读次数:259
push() 和 pop()
数组 push() 方法可以接收任意数量的参数,把它们逐个添加到数组末尾,并返回修改后数组的长度。而 pop() 方法则从数组末尾移除最后一项,减少数组的 length 值,然后返回移除的项。如下:var colors = []; //创建一个数组var count = colors.pu...
分类:其他好文   时间:2014-08-14 01:04:57    阅读次数:170
UVA - 12046 Great Numbers
Description Problem G - Great Numbers In this problem you have to count the number of great numbers of length n. Here a great number must have the following property: the number must be divis...
分类:其他好文   时间:2014-08-13 22:35:27    阅读次数:219
POJ 2777 Count Color (线段树区间更新加查询)
Description Chosen Problem Solving and Program design as an optional course, you are required to solve all kinds of problems. Here, we get a new problem. There is a very long board with length L...
分类:其他好文   时间:2014-08-13 22:28:57    阅读次数:401
如何在JSTL中获取数组或者list对象的索引值(index)
产品序号:${status.count}产品名称:${products.name}上面代码中的varStatus是关键,${status.count}即是我们要的数组的索引值。
分类:Web程序   时间:2014-08-13 18:31:36    阅读次数:292
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