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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...Paint的实例化操作不要写在onDraw()方法中等); 对于并发下载等类似逻辑的实现尽量避免多次创建线程对象,而是交给线程池处理。 当然了,有了上面说明GC导致的性能后我们就该定分析问题了,可以通过运行DDMS->Allocation T...
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Generate GUID in MySQL for existing Data?

...e_col = YourTable.unique_col) SET guid_column = new_data.new_id UPDATE once again: It seems that your original query should also work (maybe you don't need WHERE columnID is not null, so all my fancy code is not needed. s...
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一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术

...SEMBLY_VERSION #define _CRT_ASSEMBLY_VERSION "8.0.50608.0" #endif 可以修改8.0.50608.0为8.0.50727.42以产生你想要的manifest信息。 若我想将我的程序发布为独立程序集(isolated application),不去依赖目标pc的系统assembly,该怎么办? 带上所有依赖的...
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【解决】Linux mysql如何重置root密码? - 更多技术 - 清泛网 - 专注C/C++及内核技术

...> FLUSH PRIVILEGES; 如果ALTER USER语句不起作用,请尝试直接修改用户表: mysql> UPDATE mysql.user SET password = password('123456') WHERE user = 'root' AND Host = 'localhost'; mysql> FLUSH PRIVILEGES; 如果您有MySQL 5.7.5及更早版本或MariaDB 10.1.20及更早版...
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App Inventor 2 网络微数据库你用对了吗? - App Inventor 2 中文网 - 清泛...

...何选择适合自己的服务器。 网络微数据组件默认(不修改的情况下)使用MIT的服务器,它的缺点是由于服务器在国外,访问速度会很慢,而且它没有命名空间的概念,即所有人使用同一个空间,这就导致如果A用户保存了一个...
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The project type is not supported by this installation

...bout 18 months newer, and actually solves the problem. This historically once-accurate answer is no longer as accurate. Leaving intact after the break for this reason. - thanks - jcolebrand What edition of VS do you use? VS2008 Express, Standard, Pro or Team System? VS2010 Professional, Premium ...
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How can I beautify JavaScript code using Command Line?

...is a little bit misleading; Download the zip file, extract everything, place js.jar in your Java classpath (or Library/Java/Extensions on OS X). You can then run scripts with an invocation similar to this java -cp js.jar org.mozilla.javascript.tools.shell.Main name-of-script.js Use the Pretty ...
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MongoDB: Combine data from multiple collections into one..how?

... Although you can't do this real-time, you can run map-reduce multiple times to merge data together by using the "reduce" out option in MongoDB 1.8+ map/reduce (see http://www.mongodb.org/display/DOCS/MapReduce#MapReduce-Outputoptions). You need to have some key in both collections ...
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What actually causes a Stack Overflow error? [duplicate]

...hrows a java.lang.StackOverflowError error under the following circumstance: 10 Answers ...
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MFC 修改对话框图标 - C/C++ - 清泛网 - 专注C/C++及内核技术

MFC 修改对话框图标在对应对话框的初始化函数OnInitDialog()中,添加以下代码:HICON m_hIcon;m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); 主框架的...在对应对话框的初始化函数OnInitDialog()中,添加以下代码: HICON m_hIcon; m_hIcon = AfxGetApp()->...