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You have a wonderful problem, when Visual Studio writes C # with a hint: "Could not find the type name or namespace name XXX (whether a using directive or assembly reference is missing)" Check it out,1, neither I do not have this class,2, nor did I write "Using XXX;" To reference namespaces,3, more than I referenced the other. dll files, forget to add references,4. There is no spelling error in the end. It'

Today, when introducing a static framework library, the compiler encountered the "Can" T map file, errno=22 file ' xxx ' for Architecture arm64 (ARMV7) Problem! Cause I was in the main project, build setting-----"Other linker flags-force_load the framework Library There are several ways to do this online: 1, find the reference project's build setting----"Build active architecture only----" set to No I was no, so it didn't work out. 2 and finally

Label:Original: Error 21002:[SQL-DMO] user "xxx" already existsReprinted from: http://topic.csdn.net/u/20120829/09/faf381b6-d4e9-4f97-a21f-d1adfd43fbe4.html?seed=1190913404r= 79566866#r_79566866MSSQL2000 when you migrate a database or restore a database, create a new user name or specify a database logon user error message: "Error 21002:[SQL-DMO" user "xxx" already exists "Cause:This is what we often call "

MySQL is very powerful, support direct copy database file Quick Backup, where is the database file?Open the MySQL configuration file My.iniand locate the datadir node, asDatadir= "D:/program files/mysql/mysql Server 5.1/data"Enter the above folder, you can see the new database folder in MySQL, each folder is named after the database name, you want to back up which database, the folder copy away. To restore the database, copy it to the data directory, it is so simple!However, after a copy of a da

When the project was imported, it encountered this problem: Android Build path contains duplicate entry: ' src ' for Project XXX,Workaround: Locate the project's Project.Properties file, Modify the TARGET=ANDROID-17, modify the following number, and change it to the corresponding number of the SDK we installedThe reason: The version of the SDK I installed does not match the version of the SDK for the project you are importing.Android Build path contai

Springmvc problem xxx is not mapped [from XX] or unknown Entity:com.spring.main.pojo.PersonIt took a day till the wee hours to find a place not configuredAt the beginning of the HQL statement is wrong, but found no, online search to search is said Pojo class name written in the table name, so that the low-level error may have, examined n times, found not, but why will still report the same error? This error was found when I used the Get method to get

Http://www.cnblogs.com/breezemist/p/4326644.htmlToday in the use of Swift found that the write Func always required to write out the second parameter of the external variable name, do not understand, feel and the book said the function is not the same, checked, and finally found the reason: written in the class inside the function called method, is a special functoin, the system will automatically fill in the external variable name, see the following connection Http://stackoverflow.com/questions

The idea is as follows: Sometimes I think the parameter in views is used to determine which layout should be used. How can this problem be solved? Frontendviewspagexxx. php $ this- amp; gt; layout #039; main #039; error amp; lt ;? Phpinclude ( quot; .. layoutsmain. php quot ;);? Amp; gt; what should I do when an error is reported ?... The idea is as follows: Sometimes I think the parameter in views is used to determine which layout to use. How can we do this? Frontend/views/page/

Note: An unhandled exception occurs during the execution of the current Web request. Check the stack trace information for details about the error and the source of the error in the code.Exception details: System. BadImageFormatException: failed to load the file, assembly "XXX", or one of its dependencies. Attackers try to load programs with incorrect format.Source error:An unhandled exception is generated during the execution of the current Web reque

The identifier "XXX" is not CLS-compliant, meaning that as long as there is no interface with the outside, such as in private functions, but with some non-CLS-compliant types,But if it is public, it must conform to this norm.The workaround is to change the fields of these public types in this class to the attribute form (get,set form) and call the class externally to access it as an attribute.Reference articlesWhat does it mean that there are data typ

User objects that meet the specified conditions to the new List. With LINQ, this part of filtering becomes very easy, and can be completed in just one sentence. If you think this example is not enough to show that LINQ has made a significant contribution to productivity, please follow my next article (for now, "Why should we embrace LINQ"). In the above Code, the return value is IQueryable LINQ to SQLIs a lightweight O/R Mapping solution built in. NET 3.5. It can map data tables to object obje

Problem Description:"You need to install the old Java SE 6 operating environment to open XXX" When installing an app on Mac OS today, searching the internet for a bit, There is said to change the app's Info.plist file, the jvmversion into their own version of the machine, but in my environment modified still does not work, and finally used the following method to fix.SolutionsDownload javaforosx.dmg and install it from the link below and then execute

First of all, the files in the Webroot directory are all available through the browser input path, directly read to theFor example, this:The webroot below Web-inf cannot be read directly by the browser input path.Because it's protected.If the JSP reads a picture.JSP under the webroot/jspPicture under the Webroot/imagThen we have to. /imag/xx.jpg gets the relative path.Because the servlet program is unable to read an absolute path such as C:\xx\xx\xx.Unless you change the Tomcat configuration fil

If you develop an app independently, you may not encounter duplicate attributes of multiple custom classes. However, if it is developed by a team, you may encounter this problem. The two custom classes A and B use the same name to define attributes. In this case, the system reports a warning, attribute "XXX" has already been defined. A and B don't want to modify their own names. This is a headache. For example, if you define an above attrs. xml file u

[Problem] CPU freq support is added to the kernel, debugging of CPU freq is started, and cpufreq. DEBUG = 1 is added to bootargs to enable the debug of CPU freq in the kernel. The CPU freq driver is added, but occasionally appears: _ Ratelimit: XXX callbacks suppressed [Solution process] 1. gogole or Baidu is fruitless, but someone suggested checking the log to see if it is helpful. So go: CAT/var/log/messages We found such a pile of things: Dec 31 21

Css is written in the content sent by phpmailer, backgroundurl (xxx) is used in css, and css is written in the content sent by phpmailer, the background url (xxx) is used in css, and the url () is null. what is the problem? Who has had the same experience? I don't know where to filter. Reply to discussion (solution) To send an email, you need to write the specific address of the url, which can be acc

Xxx cannot be resolved to a type Error solution, cannotresolved Xxx cannot be resolved to a type Introduction:Newly imported eclipse projects often see the error message "XX cannot be resolved to a type. This article will make a summary. Body:(1) jdk does not match (or does not exist) The jdk specified by the project is "jdk1.6.0 _ 18", and currently eclipse uses "jdk1.6.0 _ 22 ". You need to make a simpl

When the mysql PRIMARY key is set to auto_increment, the PRIMARY key repeat Duplicate entry 'xxx' for key 'Primary ', duplicateentry occurs during the concurrent performance test. When the mysql PRIMARY key is set to auto_increment, the PRIMARY key repeat Duplicate entry 'xxx' for key 'Primary 'appears in the concurrent performance test' Solution: Add the setting innodb_autoinc_lock_mode = 0 in the [mysqld]

Solution: Resharper prompts 'can not resolve symbol XXX' for the system keyword and displays red, but the compilation is normal. resharperresolveEnvironment:Visual studio 2013 community Update 4 + Resharper 8.2 + Windows 7Symptom:My C # project compilation is normal, but the system keyword is red in the Code Editor, prompting the system keyword prompt 'can not resolve symbol XXX '.Such as the Where, Take, S

If you need to configure the released DLL file, you can transfer the configuration information to app. config. Of course, you can also directly use the configuration in XXX. dll. config without transferring it. Of course, you must ensure thatProgramThe execution directory already contains the XXX. dll. config file. CodeAdded the file monitoring cache. View code Using System; Using System. Collec