python 数据库编程问题 用了django和sqlite3 Log 是个数据库模板,包含一个时间列 code: log_list=Log.objects.all() log=log_list[0] error: invalid literal for int with base 10 2008-11-7... 怎么解决呢?
by janeed1981 - Python - 2008-11-07 16:55:36 阅读(7290) 回复(4)
1。mysql说int(10) 中的 ‘10’表示显示宽度,我想请问如果我的数据宽度超过了10会如何? 2。int型存储的空间是4个字节,是说一个数字,或者说一个字符的字节数是4吗? 实在不清楚怎么回事! 谢谢大家!
One reason why I wrote this FAQ is that I did not find one dealing with such a controversial (and sometimes confusing) topic as this in the forum. Another (perhaps the main reason!!) is that I had not written any FAQ yet . If you ever had difficulties dealing with pointers (you would have certainly had, if you are a C programmer) then go through this FAQ. Otherwise don't bother. In the following...
对新手很有帮助. One reason why I wrote this FAQ is that I did not find one dealing with such a controversial (and sometimes confusing) topic as this in the forum. Another (perhaps the main reason!!) is that I had not written any FAQ yet . If you ever had difficulties dealing with pointers (you would have certainly had, if you are a C programmer) then go through this FAQ. Otherwise don't bother. ...
int *f2(void){ int*ptr;//这个函数有啥问题?改成int *ptr=NULL,就没有问题了么? *ptr =10; return ptr; } int *f2(void){ int *ptr=(int *)10;//改成这样有问题么? return ptr; } [ 本帖最后由 xxldc 于 2007-9-24 17:17 编辑 ]
int array[10]; array的值等于&array array可以说是个指针常量,它里面存放的地址值就是数组第一个元素的地址。 那&array应该是放array的地址 那这两个为什么会相等了?
unix下的可执行文件中是否包含B80104(mov ax,0104)这样的机器码 也就是说,是不是可以用UltraEdit32这类的二进制浏览器浏览此文件时,可以找到连续的“B8 01 04”(mov ax,0104)这样的机器码,即二进制的且值为十六进制的B8H、01H、04H这样连续的三个字节值
在xp上安装10g出现“在oraparma.int为找到先决条件。。。” 本人在做毕业设计,程序已经做完,在本机成功,在别人的笔记本安装oracle 10g时就是按不上,,急呀!!请大家帮忙!