我用-Wsign-conversion编译了以下代码:
int main()
{
unsigned int a = 8;
int b = a + 8u; // warning: implicit conversion changes signedness: 'unsigned int' to 'int'
int c = a - 8u; // warning: implicit conversion changes signedness: 'unsigned int' to 'int'
int d = a *
我有两个变量:
unsigned short a,b;
/* When I compare them with a magic number like this */
if (a > 8U) /* all fine*/
/* But when I make the following comparison: */
if ((a-b) > 8U) /* warning: comparison between signed and unsigned*/
/* And when I make the following comparison: */
if ((a-b)
这个问题是关于云运行作业(不是服务)。
InterfaceError - (pg8000.exceptions.InterfaceError) Can't create a connection to host 127.0.0.1 and port 5432 (timeout is None and source_address is None).
我有连接到云sql的python代码,并在sql上运行一个简单的select *。
我的云sql实例是公共的,与云运行的帐户和区域相同。
我通过控制台向云运行作业添加了云sql连接:
使用docker在本地计算机上重