go declared and not used

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was not declared in this scope

“was not declared in this scope”是一个错误信息,在编译的时候会遇到.其含义为标识符在其出现的地方是未被定义的. 出现该错误的时候,会同时把未定义的变量名显示出来.比如如下程序: int main(){ printf("%d",i);//这个i是没定义的.} 就会显示一个'i' was not declared in this scope或者类似的错误信息出来. 对于变量和函数,如果未定义都会出现这个错误. 该错误出现时,需要根据出现该错误的行号及名…

Python:no encoding declared 错误

使用Python编译的时候出现如下错误: SyntaxError: Non-ASCII character ‘\xe5’ in file magentonotes.com.py on line 2, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details 解决方法:python的默认编码文件是用的ASCII码,将文件存成了UTF-8,编译就可以通过, 在py文件开头加入 1 # -*-…

Android Studio常见问题 -- uses-sdk:minSdkVersion 8 cannot be smaller than version 9 declared in library

问题描述 * What went wrong:Execution failed for task ':app:processDebugManifest'.> Manifest merger failed : uses-sdk:minSdkVersion 8 cannot be smaller than version 9 declared in library D:\AndroidStudioProjects\StudioDemo\app\build\intermediates\exploded…

IAR for msp430 MDK中 warning: #223-D: function "xxx" declared implicitly 解决方法

今天在EINT的范例里添加了一个函数,即eint.c中添加了一个datawrite()的函数,并在主函数main.c中调用,编译便警告 warning: #223-D: function "datawrite()" declared implicitly 很奇怪,在eint.c中也有初始化函数EINTInit()同样在main.c中调用没有问题,问什么偏偏这个不行. 但毕竟是个警告,还不是错误,做了个测试IO, while(1) { FIO1SET = 1<<19;…

Multiple annotations found at this line: - The content of element type "mapper" must match "EMPTY". - Attribute "namespace" must be declared for element type "mapper".

今天在mybatis的mapper映射配置文件中遇到了这样的问题,困扰了我3个小时: Multiple annotations found at this line: - The content of element type "mapper" must match "EMPTY". - Attribute "namespace" must be declared for element type "mapper". 代码如下…

[BTS] System.Xml.Schema.XmlSchemaException: The complexType has already been declared when generate IDoc schema.

I use wcf-sap adapter for generate the schema of IDoc that named "YHREMPMASTER". but throw following error message. System.Xml.Schema.XmlSchemaException: The complexType 'http://Microsoft.LobServices.Sap/2007/03/Types/Idoc/2/YHREMPMASTER//731:YH…

android.content.ActivityNotFoundException: Unable to find explicit activity class have you declared this activity in your AndroidManifest.xml?

在整合PullToRefresh的时候出现如下异常 10-22 23:20:01.826 32331-32331/com.example.news.andoridnewsapp E/AndroidRuntime﹕ FATAL EXCEPTION: main Process: com.example.news.andoridnewsapp, PID: 32331 android.content.ActivityNotFoundException: Unable to find explicit a…