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What is the difference between a pseudo-class and a pseudo-element in CSS?
...description
The pseudo-class concept is introduced to permit selection based on information that lies outside of the document tree or that cannot be expressed using the other simple selectors.
A pseudo-class always consists of a "colon" (:) followed by the name of the pseudo-class and optio...
adding noise to a signal in python
...ance .
When modeling this in python, you can either
1. Calculate variance based on a desired SNR and a set of existing measurements, which would work if you expect your measurements to have fairly consistent amplitude values.
2. Alternatively, you could set noise power to a known level to match som...
How does Zalgo text work?
...th given height. Combining marks may be rendered above, below, or inside a base character
So you can easily construct a character sequence, consisting of a base character and “combining above” marks, of any length, to reach any desired visual height, assuming that the rendering software conform...
Short form for Java if statement
... a;
}
else {
max = b;
}
Setting a single variable to one of two states based on a single condition is such a common use of if-else that a shortcut has been devised for it, the conditional operator, ?:. Using the conditional operator you can rewrite the above example in a single line like this:
...
Maven project.build.directory
...t;project>
...
<build>
<directory>${project.basedir}/target</directory>
<outputDirectory>${project.build.directory}/classes</outputDirectory>
<finalName>${project.artifactId}-${project.version}</finalName>
<testO...
Web安全测试之XSS - 更多技术 - 清泛网 - 专注C/C++及内核技术
...具, 点击Toolbar上的"TextWizard" 按钮
XSS 攻击场景
1. Dom-Based XSS 漏洞 攻击过程如下
Tom 发现了Victim.com中的一个页面有XSS漏洞，
例如: http://victim.com/search.asp?term=apple
服务器中Search.asp 页面的代码大概如下
<html>
<title></titl...
Joda-Time: what's the difference between Period, Interval and Duration?
... at the 1st of the next month but the duration (in milliseconds) will vary based on the month in question
For question 3, A specific method to divide a duration is not really needed because we can always get the number of milliseconds from the duration as a long (using getMillis()), divide it and...
What is the overhead of creating a new HttpClient per call in a WebAPI client?
... you find that you need to use a static HttpClient with different headers, base address, etc. what you will need to do is to create the HttpRequestMessage manually and set those values on the HttpRequestMessage. Then, use the HttpClient:SendAsync(HttpRequestMessage requestMessage, ...)
UPDATE for ....
What framework for MVVM should I use? [closed]
... If you think that you might want to support Silverlight from the same codebase then the WPF only frameworks should be discounted.
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Nullable types and the ternary operator: why is `? 10 : null` forbidden? [duplicate]
... to an int?. Note that another possibility would be to box the int 10 to a base class or interface of System.Int32. As an example GetBoolValue() ? (IFormattable)10 : null // #1B or GetBoolValue() ? 10 : (IFormattable)null // #2B will be OK. This possibility may be a reason why they don't make the nu...