前提:winxp环境;QtSDK版本v1.1.3;库文件版本4.7.4;数据库驱动类型:QODBC有两次遇到过如题所述的warning.均自行解决.出现场合与解决方法如下:第一次,使用QSqlRelationalTableModel模型.将数据库的第一列设置为QSqlRelationmodel->setRelation(0,QSqlRelation("name_of_sql","..
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数据库 时间:
2016-09-17 22:05:26
阅读次数:
245
Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially filled, where empty cells are filled wit ...
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其他好文 时间:
2016-09-17 17:53:07
阅读次数:
143
<?php /** * wechat php test */ //define your token define("TOKEN", "weixin"); $wechatObj = new wechatCallbackapiTest(); $wechatObj->valid(); class wec ...
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Web程序 时间:
2016-09-16 19:42:13
阅读次数:
404
css3中定义required,focus,valid和invalid样式 本文章来给大家介绍在css3定义required,focus,valid和invalid样式的方法,此方法目前只支持ie9+及ff,gg浏览器哦。 css3 提示只适用于高级浏览器: Chrome Firefox Safar ...
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Web程序 时间:
2016-09-16 12:42:07
阅读次数:
128
Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library functio ...
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其他好文 时间:
2016-09-15 06:27:13
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184
Validate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => true Note: It is intended for the ...
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其他好文 时间:
2016-09-15 06:19:07
阅读次数:
117
Given two strings s and t, write a function to determine if t is an anagram of s. For example,s = "anagram", t = "nagaram", return true.s = "rat", t = ...
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其他好文 时间:
2016-09-13 11:42:46
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110
Given a linked list, remove the nth node from the end of list and return its head. For example, Note:Given n will always be valid.Try to do this in on ...
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其他好文 时间:
2016-09-13 11:40:14
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135
Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are +, -, *, /. Each operand may be an integer or another e ...
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其他好文 时间:
2016-09-11 06:51:35
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151
一.磁盘分区 装过系统后第一块磁盘的设备号是/dev/sda,在你添加一个新的磁盘后一般情况下是/dev/sdb *******进入fdisk界面***** # fdisk /dev/sdbDevice contains neither a valid DOS partition table, no ...
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系统相关 时间:
2016-09-08 20:12:50
阅读次数:
267