开启阅读模式 WATERHAMMER A COMPLEX PHENOMENON WITH A SIMPLE SOLUTION Waterhammer is an impact load that is the most misunderstood force known to pressure transducers today. A waterhammer is created by stopping and/or starting a liquid flow suddenly. The re
Managing Complex Regexes Regular expressions are fine if the text pattern you need to match is simple. But matching complicated text patterns might require long, convoluted regular expressions. You can mitigate this by telling the re.compile() functi
上一篇的中介绍过了对于EF4.1框架中,实体的简单属性的处理 这一篇介绍一下Code First方法中,实体Complex属性的处理.Complex属性是将一个对象做为另一个对象的属性.映射到数据库中则子对象表现为多个属性字段. 反之,也就是说,数据库中多个相关字段映射成一个子对象,来进行统一的管理. complex属性要注意不同于外键引用对象的. 下面用Code First的方式先做个complex属性. public class Book { public int BookId { get;
COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION With the use of paging, truly effective multiprogramming systems came into being. Furthermore, the simple tactic of breaking a process up into pages led to the development
http://blogs.msdn.com/b/debuggingtoolbox/archive/2011/10/03/top-things-to-consider-when-troubleshooting-complex-application-issues.aspx 1- For reactive incidents: “Bring the engineer onsite because it is going to be easier to isolate the problem.” Th
http://www.nickriggs.com/posts/post-complex-javascript-objects-to-asp-net-mvc-controllers/ Post Complex JavaScript Objects to ASP.NET MVC Controllers Posted in ASP.NET'JavaScript August 21, 2009 Use the plug-in postify.js to handle posting comple
Let's explore Go's built-in support for complex numbers via the complex64 and complex128 types. For cube roots, Newton's method amounts to repeating: Find the cube root of 2, just to make sure the algorithm works. There is a Pow function in the math/
使用python可以实现将一个整数或者浮点数转换为一个复数: 演示如下: >>> # 演示复数函数:complex(x) ... >>> x = complex(100) >>> x (100+0j) >>> y = complex(1) >>> y (1+0j) >>> z = complex(2) >>> z (2+0j) >>>
有时候我们希望在sql一个表里面的column, 一部分被分化成另一个class 典型的例子是 Address 直接看代码: [Table("member")] public class Member { [Key] public Int32 memberId { get; set; } public string name { get; set; } public virtual Address address { get; set; } } /* 不能公开 - public DbS
An Overview of Complex Event Processing 复杂事件处理技术概览(一) 翻译前言:我在理解复杂事件处理(CEP)方面一直有这样的困惑--为什么这种计算模式是有效的,能够分析得到有用的结果?为什么它会快?我始终还没有找到我期望的答案.不像map-reduce模型,google的论文非常清楚的描述了它的场景:或者disruptor框架,原作者清晰地解释了它为什么会快.在试图理解CEP的过程中,我准备翻译一些我认为有启发性的文章,希望也对大家有用.这篇文章的原文<A
The R qgraph Package: Using R to Visualize Complex Relationships Among Variables in a Large Dataset, Part One A Tutorial by D. M. Wiig, Professor of Political Science, Grand View University In my most recent tutorials I have discussed the use of the
英文文档: class complex([real[, imag]]) Return a complex number with the value real + imag*1j or convert a string or number to a complex number. If the first parameter is a string, it will be interpreted as a complex number and the function must be calle