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领域驱动设计系列 (四):事件驱动下 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...; } 所以我们只需在代码里RaiseEvent就可以了。 那么如何订阅事件 其实很简单,因为我们要实现的是同步的事件,我们只需要找到所有处理这个事件的实现类,然后调用所有就可以了。 public interface IEventHandler<TEvent> where ...
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Removing MySQL 5.7 Completely [closed]

I am trying to uninstall mysql from my ubuntu 12.04 completely. But not able to. 3 Answers ...
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Is there a REAL performance difference between INT and VARCHAR primary keys?

...e performance difference between using INT vs. VARCHAR as a primary key in MySQL? I'd like to use VARCHAR as the primary key for reference lists (think US States, Country Codes) and a coworker won't budge on the INT AUTO_INCREMENT as a primary key for all tables. ...
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写出高质量代码的10个Tips - 更多技术 - 清泛网 - 专注C/C++及内核技术

写出高质量代码的10个Tips很长一段时间以来,我都在关注如何提高代码质量,也为此做过一些尝试,我想这个话题可能大家会比较感兴趣,在这里分享一下我关于如何提高代...很长一段时间以来,我都在关注如何提高代码质量,...
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Serializing object that contains cyclic object value

...which is objects with the special $ref property. Let's see how that works. root = makeToolshed(); [root.bolt === root.nut.needs, root.nut.needs.needs === root.nut]; // retutrns [true,true] The dollar sign stands for the root. .bolt having $ref tells us that .bolt is an "already seen" object, and th...
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How to create a zip archive of a directory in Python?

...port zipfile def zipdir(path, ziph): # ziph is zipfile handle for root, dirs, files in os.walk(path): for file in files: ziph.write(os.path.join(root, file)) if __name__ == '__main__': zipf = zipfile.ZipFile('Python.zip', 'w', zipfile.ZIP_DEFLATED) zipdir('tmp/'...
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Compelling examples of custom C++ allocators?

... I'm working with a MySQL storage engine that uses c++ for its code. We're using a custom allocator to use the MySQL memory system rather than competing with MySQL for memory. It allows us to make sure we're using memory as the user configured M...
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Django MEDIA_URL and MEDIA_ROOT

...rest of your URLconf goes here ... ) + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT) You no longer need if settings.DEBUG as Django will handle ensuring this is only used in Debug mode. ORIGINAL answer for Django &lt;= 1.6 Try putting this into your urls.py from django.conf im...
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如何建立一套适合自己的高胜算交易系统 - 更多技术 - 清泛网 - 专注C/C++及内核技术

如何建立一套适合自己的高胜算交易系统这个交易系统是非机械的,适合你自己个性的,有完善的交易思想、细致的市场分析和整体操作方案的,在风险市场的赢家都有自已的交易系统,因...这个交易系统是非机械的,适合你自...
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Best practice for Django project working directory structure

...s_dev.txt. Some services (eg. heroku) requires to have requirements.txt in root directory. setup.py Useful when deploying project using setuptools. It adds manage.py to PATH, so I can run manage.py directly (anywhere). Project-specific apps I used to put these apps into project_name/apps/ directory ...