Make sure base method gets called in C# Can I somehow force a derived class to always call the overridden methods base? public class BaseClass { publi
转载 2021-05-12 16:40:00
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主要引起是因為在 camera.stopPreview(); camera.release(); 前沒有將setPreviewCallback 設置為null, 解決情況: public void surfaceDestroyed(SurfaceHolder holder) { camera.setPreviewCallback(null) ; camera.stopPreview(); camera.release(); camera = null; Log.e("CameraPreview", "sufaceDestroyed---------camera r
转载 2013-07-02 19:12:00
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最近在一个机器上出现上述问题,提示资源未关闭,根据异常信息定位都那一行,发现从一个读取一个文件的流在加载后,没有关闭,关闭之后,问题解决。但不明白的是在其他很多机器上都没有这个问题,也许是机器系统的原因吧。
原创 2013-06-05 13:47:40
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今天遇到一个问题,错误提示如下:pure virtual method calledterminate called without an active exception在网上搜了下,查到的问题原因大多数纯虚函数调用的问题。我程序里确实有纯虚函数调用,但是子类已经将其实现了,并且在调用时,也实例化了子类,没有查到匹配答案。只能进一步查找问题,加调试信息。还有个比较奇怪的现象,我用gdb去运行程序
原创 2021-12-07 15:58:19
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PMD错误 Overridable method ‘XXX’ called during object construction样例public class
原创 2023-02-02 09:40:42
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Non static method 'table' should not be called statically.intelephense(1036) Intelephense 一直报这个错误, 但是代码
原创 2022-05-07 22:24:56
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reader = cmd.ExecuteReader() Do While reader.Read() Application("aaa" + reader.GetInt32(0).ToString()) = IIf(IsDBNull(reader.Item(1)), False, reader.GetBoolean(1))
原创 2023-11-16 10:00:52
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Created by Wang, Jerry, last modified on Jul 25, 2016
原创 2021-07-15 15:01:26
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  今天运行程序出现如下错误:pure virtual method calledterminate called without an active exception  吾当时就愣了:嗯?哪里有问题?仔细分析了半天,看不出问题。这个错误什么时机出现的?是在构造的时候出现的。吾构造时候干了什么?调用了一个初始化函数,初始化函数调用了一个虚函数。嗯?  吾将初始化函数从构造函数中...
原创 2021-08-06 14:53:31
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  今天运行程序出现如下错误:pure virtual method calledterminate called without an active exception  吾当时就愣了:嗯?哪里有问题?仔细分析了半天,看不出问题。这个错误什么时机出现的?是在构造的时候出现的。吾构造时候干了什么?调用了一个初始化函数,初始化函数调用了一个虚函数。嗯?  吾将初始化函数从构造函数中...
原创 2022-02-05 09:24:19
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Created by Wang, Jerry, last modified on Jul 25, 2016
原创 2022-04-21 10:30:52
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经过测试,在高并发的情况下,两种...
原创 2023-05-29 11:47:52
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php.net PHP 5 allows developers to declare constructor methods for classes. Classes which have a constructor method call this method on each newly-cre
转载 2016-09-11 20:58:00
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TheUIViewControllerclass provides the fundamental view-management model for iPhone applications. It provides automatic support for rotating the views of the view controller in response to changes to the orientation of the device. If the autoresizing properties of your view and subviews are properly
转载 2012-02-06 00:42:00
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If you are trying to read some nullable data from the database, but your type is not nullable you can get this error. If MyInt is nullable in the data ...
转载 2021-08-20 15:20:00
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描述最近在使用 EFCore 连接数据库时,遇到如下的报错信息:Unhandled Exception: System.Data.SqlTypes.SqlNullValueException: Data is Null. This method or property cannot be called on Null values.at System.Data.SqlClient.SqlBuffe
转载 2021-02-26 15:26:33
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npm安装依赖报错: cb() never called!, cb() never called!
It is used to create an alias name for another data type. The syntax of the typedef declaration is:[2] In Swift, typedef is called typealias: typealia
转载 2018-06-11 18:34:00
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Created by Jerry Wang, last modified on Aug 07, 2014initCompositeSupportSupportCompositeonControllerConnectedoControllercreateIdbyId–runWithPreprocessorsPreprocessorsapplySettingsTrigger...
原创 2021-07-15 15:48:10
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黑窗口检测【注释CMD去检测,不要去Terminal】
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