这几乎肯定是一个非常愚蠢的问题,但由于某些原因,我在互联网校验和计算方面遇到了麻烦。所有的算法基本上看起来像这样:
WORD chksm(WORD *startpos, WORD checklen){
ulong sum = 0;
WORD answer = 0;
while (checklen > 1)
{
sum += *startpos++;
checklen -= 2;
}
if (checklen == 1)
{
*(BYTE *)(&answer) = *(BYTE *)startpos;
sum += answer;
}
sum
我想要探测到这些图片,但我无法找到测量它的方法。我搜索的关键字,如“晕网度量,晕网检测,晕网分类”,他们都引导我的主题,如“创建晕网滤镜”或“晕网校正”。任何度量都能做到这一点?和从0到1的分数一样,分数越低,图像就越不可能受到晕动效应的影响。我提出的天真解决方案之一是测量图像的亮度通道。
#include <opencv2/core.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgproc.hpp>
using namespace cv;
using namespace std;
int
我使用的是Ubuntu16.04。我想安装一个与ROS相关的"apt-get安装“包,但是它不起作用。终端机上写着如下。
$ sudo apt-get install ros-kinetic-libuvc
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have
npm install node-sass
npm WARN deprecated har-validator@5.1.5: this library is no longer supported
npm WARN deprecated uuid@3.4.0: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math
npm ERR! code 1
npm ERR! path D:\Portals\SALAM_DMS\finger\node-java\node_modules\java
npm ERR! command failed
npm ERR! command C:\Windows\system32\cmd.exe /d /s /c node-gyp rebuild
npm ERR! gyp info it worked if it ends with ok
npm ERR! gyp info using node-gyp@8.3.0
npm ERR! gyp info using node@16.1
我已经将PYTHON_TARGETS="python2_7 python3_5 python3_4"添加到我的/etc/portage/make.conf中。
当尝试安装任何支持python目标的程序时,会发生以下情况:
sudo emerge --ask dev-python/google-api-python-client
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild N ] dev-python/httplib2
我已经在我的ubuntu14.04上安装了python2.7.5。然后我想安装virtualbox (或任何其他应用程序),但是我得到了这个错误:
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
apt-xapian-i
我正在尝试使用sudo apt-get upgrade命令升级我的raspbian,但是它总是会导致这个错误
我尝试了这个命令sudo dpkg --configure -a,它显示了相同的错误
我再次尝试对每个包进行一次配置,但没有结果。如何配置dpkg??
dpkg: error processing package python-idna (--configure):
package is in a very bad inconsistent state; you should
reinstall it before attempting configurati
在克隆我的项目之后,我尝试安装不同的包并运行它,但不幸的是,在安装依赖项时,会遇到这些错误。我无法安装任何依赖项或其他任何东西。有人知道这是怎么回事吗?提前谢谢
npm WARN deprecated request@2.81.0: request has been deprecated, see https://github.com/request/request/issues/3142
npm WARN deprecated uuid@3.4.0: Please upgrade to version 7 or higher. Older versions may use Ma
我运行了sudo apt-get upgrade,我得到了这个错误
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
99 not fully installed or removed.
Need to get 0 B/47.2 kB of archives.
After t
我尝试在Bash中选择一些输出的一部分,但不知道将过滤器放在哪里,并且对我得到的输出感到困惑。
我从
declare -a pythons=("python" "python2" "python3")
for p in "${pythons[@]}"
do
echo "$p: $($p --version 2>&1) in $(which $p)" && for i in $(which -a $p); do echo " $i ($($i --version 2
我有以下脚本:
#!/usr/bin/python
from twisted.internet import reactor
import scrapy
from scrapy.crawler import CrawlerRunner
from scrapy.utils.log import configure_logging
from scrapy.selector import Selector
from lxml import html
class GivenSpider(scrapy.Spider):
name = "dmoz"
allowed_do
看起来python运行的很完美……
$ python
Python 2.7.8 (default, Aug 24 2014, 21:26:19)
[GCC 4.2.1 Compatible Apple LLVM 5.1 (clang-503.0.40)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>
但是python -v会打印出各种各样的垃圾:
$ python -v
# installi
我正在尝试删除python,但有人告诉我,它将删除几乎我所有的软件包安装(夸张)。我如何才能删除python3.8而不是所有其他包?
hutber@hutber:/var/www$ sudo apt-get purge python3.8
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
li
因此,我做了适当的更新,它更新说,我需要升级5个软件包。因此,我做了适当的升级,它说,它一直说0升级,0新安装,0删除和5没有升级。下面是我所做的,我一直得到这个
sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer req
我试图使用Qt创建者编译,但它返回163个错误。
C:\User\Kato\Desktop\Qt projects\PythonQt-build-desktop-Qt_4_7_4_for_Desktop_-_MinGW_4_4__Qt_SDK__Debug\src....\PythonQt2.0.1\src\PythonQtStdDecorators.h:46:错误: Python.h:没有这样的文件或目录
还有其他的目录。
我安装了python3.2,并将prf文件更改为:
# profile to include and link Python
# Change this var