How to Solve sed -i error:
sed -i.bak '/.*CMDLINE_LINUX.*/s#(.*)"#\1 net.ifnames=0"#' /etc/default/grub
always report the error: sed: -e expression #1, char 44: invalid reference \1 on `s’ command’s RHS
sed -i -r '/.*CMDLINE_LINUX.*/s#(.*)"#\1 net.ifnames=0"#' /etc/default/grub
Later we know that you need to add -r, because there is a backward reference – \1, and -i and -r should be written separately
1. Error information
(python37) H:\emd>python setup.py install
running install
running bdist_egg
running egg_info
creating emd.egg-info
writing emd.egg-info\PKG-INFO
writing dependency_links to emd.egg-info\dependency_links.txt
writing top-level names to emd.egg-info\top_level.txt
writing manifest file 'emd.egg-info\SOURCES.txt'
D:\Anaconda_app\envs\python37\lib\site-packages\torch\utils\cpp_extension.py:370: UserWarning: Attempted to use ninja as the BuildExtension backend but we
could not find ninja.. Falling back to using the slow distutils backend.
warnings.warn(msg.format('we could not find ninja.'))
reading manifest file 'emd.egg-info\SOURCES.txt'
writing manifest file 'emd.egg-info\SOURCES.txt'
installing library code to build\bdist.win-amd64\egg
running install_lib
running build_ext
D:\Anaconda_app\envs\python37\lib\site-packages\torch\utils\cpp_extension.py:305: UserWarning: Error checking compiler version for cl: [WinError 2] The system finds The specified file was not found.
warnings.warn(f'Error checking compiler version for {compiler}: {error}')
building 'emd' extension
creating build
creating build\temp.win-amd64-3.7
……
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(427): note: See the instantiation of "OptionalBase<at::Tensor>" to the class template being compiled.
References
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\ATen/core/TensorBody.h(734): note: See the class template instantiating "c10:: optional<at::Tensor>
" reference
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(395): warning C4624: "c10::trivially_ copyable_optimization_optional_base
<T>": the destructor has been implicitly defined as "deleted"
with
[
T=at::Tensor
]
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(476): warning C4814: “c10::optional<at::Tensor>::contained_val”: In C++
14, "constexpr" will not mean "constant"; please consider specifying "constant" explicitly
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(477): error C2556: “at::Tensor &c10::optional<at::Tensor>::contained_val
(void) const &”: Overloaded functions with “const at::Tensor &c10::optional<at::Tensor>::contained_val(void) const &”It just differs in the return type
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(471): note: See the declaration of "c10::optional<at::Tensor>::contained_val"
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(477): error C2373: “c10::optional<at::Tensor>::contained_val”: Redefinition.
Different type modifiers
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(471): note: see "c10::optional<at:: Tensor>::contained_val" declaration
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(476): warning C4814: "c10::optional< int64_t>::contained_val": in C++14
In C++14, "constexpr" will not mean "constant"; please consider specifying "constant" explicitly
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\ATen/core/TensorBody.h(774): note: see instantiating "c10:: optional<int64_t>" for the
References
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(477): error C2556: "int64_t &c10:: optional<int64_t>::contained_val(void)
const &": overloaded function is the same as "const int64_t &c10::optional<int64_t>::contained_val(void) const & " only differs in the return type
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(471): note: see "c10::optional<int64_t t>::contained_val" declaration
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(477): error C2373: "c10::optional< int64_t>::contained_val": redefinition; different
Same type modifier
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(471): note: see "c10::optional< int64_t t>::contained_val" declaration
D:\Anaconda_app\envs\python37\lib\site-packages\torch\include\c10/util/Optional.h(477): fatal error C1003: error count exceeds 100; compilation is being stopped
error: command 'D:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\BIN\\x86_amd64\\cl.exe' failed with exit status 2
2. Error analysis
Analysis: From the above error message, we get the information
D:\Anaconda_app\envs\python37\lib\site-packages\torch\utils\cpp_extension.py:370: UserWarning: Attempted to use ninja as the BuildExtension backend but we could not find ninja… Falling back to using the slow distutils backend.
D:\Anaconda_app\envs\python37\lib\site-packages\torch\utils\cpp_extension.py:305: UserWarning: Error checking compiler version for cl: [WinError 2] The system could not find the
warnings.warn(f’Error checking compiler version for {compiler}: {error}’)
1) I need to use the ninja package to compile, but I don’t have ninja installed, so I need to install ninja first (pip install ninja)
2) Can’t find the cl.exe that meets the required version, according to the given D:\Anaconda_app\envs\python37\lib\site-packages\torch\utils\cpp_extension.py:305:
Jump to source code
try:
if sys.platform.startswith('linux'):
minimum_required_version = MINIMUM_GCC_VERSION
versionstr = subprocess.check_output([compiler, '-dumpfullversion', '-dumpversion'])
version = versionstr.decode().strip().split('.')
else:
minimum_required_version = MINIMUM_MSVC_VERSION
compiler_info = subprocess.check_output(compiler, stderr=subprocess.STDOUT)
match = re.search(r'(\d+)\.(\d+)\.(\d+)', compiler_info.decode().strip())
version = (0, 0, 0) if match is None else match.groups()
except Exception:
_, error, _ = sys.exc_info()
warnings.warn(f'Error checking compiler version for {compiler}: {error}')
return False
I am not on the Linux platform, but on the win platform, so I found the version requirements of cl.exe:
MINIMUM_MSVC_VERSION = (19, 0, 24215)
MSVC is a compiler called “cl.exe”. It is a compiler specially developed by Microsoft for vs.
The above statement states that the minimum version of MSVC requires MSVC 19.0.24215
3. Knowledge to be understood
_MSC_Ver is the built-in macro of MSVC compiler, which defines the version of the compiler
MS is short for Microsoft
C MSc is Microsoft’s C compiler
short for ver version.
So _MSC_Ver means: the version of Microsoft’s C compiler.
MSC 1.0 _MSC_VER == 100
MSC 2.0 _MSC_VER == 200
MSC 3.0 _MSC_VER == 300
MSC 4.0 _MSC_VER == 400
MSC 5.0 _MSC_VER == 500
MSC 6.0 _MSC_VER == 600
MSC 7.0 _MSC_VER == 700
MSVC++ 1.0 _MSC_VER == 800
MSVC++ 2.0 _MSC_VER == 900
MSVC++ 4.0 _MSC_VER == 1000 (Developer Studio 4.0)
MSVC++ 4.2 _MSC_VER == 1020 (Developer Studio 4.2)
MSVC++ 5.0 _MSC_VER == 1100 (Visual Studio 97 version 5.0)
MSVC++ 6.0 _MSC_VER == 1200 (Visual Studio 6.0 version 6.0)
MSVC++ 7.0 _MSC_VER == 1300 (Visual Studio .NET 2002 version 7.0)
MSVC++ 7.1 _MSC_VER == 1310 (Visual Studio .NET 2003 version 7.1)
MSVC++ 8.0 _MSC_VER == 1400 (Visual Studio 2005 version 8.0)
MSVC++ 9.0 _MSC_VER == 1500 (Visual Studio 2008 version 9.0)
MSVC++ 10.0 _MSC_VER == 1600 (Visual Studio 2010 version 10.0)
MSVC++ 11.0 _MSC_VER == 1700 (Visual Studio 2012 version 11.0)
MSVC++ 12.0 _MSC_VER == 1800 (Visual Studio 2013 version 12.0)
MSVC++ 14.0 _MSC_VER == 1900 (Visual Studio 2015 version 14.0)
MSVC++ 14.1 _MSC_VER == 1910 (Visual Studio 2017 version 15.0)
MSVC++ 14.11 _MSC_VER == 1911 (Visual Studio 2017 version 15.3)
MSVC++ 14.12 _MSC_VER == 1912 (Visual Studio 2017 version 15.5)
MSVC++ 14.13 _MSC_VER == 1913 (Visual Studio 2017 version 15.6)
MSVC++ 14.14 _MSC_VER == 1914 (Visual Studio 2017 version 15.7)
MSVC++ 14.15 _MSC_VER == 1915 (Visual Studio 2017 version 15.8)
MSVC++ 14.16 _MSC_VER == 1916 (Visual Studio 2017 version 15.9)
MSVC++ 14.2 _MSC_VER == 1920 (Visual Studio 2019 Version 16.0)
MSVC++ 14.21 _MSC_VER == 1921 (Visual Studio 2019 Version 16.1)
MSVC++ 14.22 _MSC_VER == 1922 (Visual Studio 2019 Version 16.2)
For example, MSVC + + 14.0 indicates that the version of Visual C + + is 14.0, and visual studio 2015 in parentheses indicates that the VC + + is included in Microsoft development tool visual studio 2015.
4. Review problems and Solutions
1) Ninja has been installed
2) compared with the table in the third part, I need to install vs2017 at least, but the vs version in the computer is 2015. Uninstall and reinstall. (some small partners can reinstall directly without uninstallation. They are used to uninstalling and reinstalling)
vs2015 complete uninstallation: use totaluninstaller to completely uninstall visual studio 2013 and 2015
vs2017 installation: vs2017 download address and installation tutorial (illustration)
The vs2017 download method in the above link is highly recommended. There is a simplified Chinese version of the installation boot program, which is very convenient~
This is because Safari browser does not support regular expression zero assertion in two// formats:<= , ?<!
Solution:
Use constructor instead of// format
let reg = /ab?<=cd/
Change to
let reg = new RegExp('ab(?<=cd)')Scheme for regular substitution via VScode.
When encountering an incorrect version of OpenCV
(find_package\(OpenCV).*
$1 REQUIRED)
CV_(.*GRAY[^)]*)
Replace:
cv::COLOR_$1
CV_AA
cv::LINE_AA
CV_(CALIB[^ ,)]*)
cv::$1
CV_LOAD_IMAGE_([^ )]*)
cv::IMREAD_$1
#include<opencv/cv.h>：
#include <opencv2/imgproc/imgproc_c.h>
#include <opencv2/highgui/highgui_c.h>
1. Regular expression, use the IGNORECASE flag
>>> import re
>>> m = re.search('multi', 'A mUltiCased string', re.IGNORECASE)
>>> bool(m) 2.
converts two strings to the same uppercase before comparing, using upper() or lowercase,lower()
>>> s = 'A mUltiCased string'.lower()
>>> s
'a multicased string'
>>> s.find('multi')
2
String regEx="[`~!@#$%^&*()_\\-+=|{}':;',\\[\\].<>/?~！@#￥%……&*（）——+|{}【】‘；：”“’。，、？]";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(searchKeyWord);
searchKeyWord = m.replaceAll("").trim(); matches Chinese, regular expression: [\u4E00-\u9FA5] because the range of Chinese unicode code is this.
matches Numbers, [0-9 b|.] this matches integers and decimals.
matches English letters, [a-z| a-z] matches upper and lower case English characters.
whitespace characters, [\s] may need to be written [\\s] in the program so that \r,\n,\t,space, and other whitespace characters can match, instead of whitespace characters just adding a ^, write: [^\\s]
package com.accord.util;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* 正则表达式匹配两个字符串之间的内容
* @author Administrator
*
*/
public class RegexUtil {
public static void main(String[] args) {
String str = "<?xml version='1.0' encoding='UTF-8'?><ufinterface billtype='gl' filename='e:\1.xml' isexchange='Y' proc='add' receiver='1060337@1060337-003' replace='Y' roottag='sendresult' sender='01' successful='Y'><sendresult><billpk></billpk><bdocid>w764</bdocid><filename>e:\1.xml</filename><resultcode>1</resultcode><resultdescription>单据w764开始处理...单据w764处理完毕!</resultdescription><content>2017.09-记账凭证-1</content></sendresult><sendresult><billpk></billpk><bdocid>w1007</bdocid><filename>e:\1.xml</filename><resultcode>1</resultcode><resultdescription>单据w1007开始处理...单据w1007处理完毕!</resultdescription><content>2017.10-记账凭证-1</content></sendresult><sendresult><billpk></billpk><bdocid>w516</bdocid><filename>e:\1.xml</filename><resultcode>1</resultcode><resultdescription>单据w516开始处理...单据w516处理完毕!</resultdescription><content>2017.07-记账凭证-50</content></sendresult></ufinterface>";
//String str = "abc3443abcfgjhgabcgfjabc";
String rgex = "<bdocid>(.*?)</bdocid>";
System.out.println((new RegexUtil()).getSubUtil(str,rgex));
List<String> lists = (new RegexUtil()).getSubUtil(str,rgex);
for (String string : lists) {
System.out.println(string);
}
System.out.println((new RegexUtil()).getSubUtilSimple(str, rgex));
}
/**
* 正则表达式匹配两个指定字符串中间的内容
* @param soap
* @return
*/
public List<String> getSubUtil(String soap,String rgex){
List<String> list = new ArrayList<String>();
Pattern pattern = Pattern.compile(rgex);// 匹配的模式
Matcher m = pattern.matcher(soap);
while (m.find()) {
int i = 1;
list.add(m.group(i));
i++;
}
return list;
}
/**
* 返回单个字符串，若匹配到多个的话就返回第一个，方法与getSubUtil一样
* @param soap
* @param rgex
* @return
*/
public String getSubUtilSimple(String soap,String rgex){
Pattern pattern = Pattern.compile(rgex);// 匹配的模式
Matcher m = pattern.matcher(soap);
while(m.find()){
return m.group(1);
}
return "";
}
}
operation results:
[w764, w1007, w516]
w764
w1007
w516
w764