当我试图运行web应用程序时,我得到了不满意的链接错误。
Suppressed: java.lang.UnsatisfiedLinkError: libXXXX.so: cannot open shared object file: No such file or directory
at deployment.ttt.war//com.sun.jna.Native.open(Native Method)
at deployment.ttt.war//com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java
我试图在我的虚拟机上下载R,但出于某些原因,我得到了以下错误:
~$ sudo apt install r-base
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution
我在上找到了这两个API。我认为它们可以用来在linux或mac系统上交换鼠标按钮。我使用它的方式如下:
Display * curdisp; // Current display.
char curmap[MAX_NUM];// Current mapping.
int nmap; // number of mappings.
curdisp = XOpenDisplay(NULL);
nmap = XGetPointerMapping(curdisp, curmap, MAX_NUM);
我有以下python代码:
print {a:b for a in [1, 2] for b in [3, 4, 5]}
我希望能给我这样的东西:
{1:3, 1:4, 1:5, 2:3, 2:4, 2:5}
但它却给了我这样的答案:
{1: 5, 2: 5}
我也尝试过循环反转,就像
print {a:b for b in [3, 4, 5] for a in [1, 2]}
但它还是给了我错误的答案。我也在下面的列表中尝试了同样的理解:
print [(a, b) for a in [1, 2] for b in [3, 4, 5]]
就像预期的那样。
我对字典有什么遗漏?
python命