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When to use f:viewAction / preRenderView versus PostConstruct?
...mely, they are not available at the moment the @PostConstruct runs. In JSF 2.0/2.1, this tag didn't exist and you have to use the preRenderView workaround.
If the backing bean is @RequestScoped, do they effectively do the exact same thing? (and so then it is up to developer choice? (@PostConstruct ...
tcp加速技术解决方案 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...弊端
慢启动，指数增加（有可能被推迟确认），http/2.0通过减少连接数来避免慢启动，上图经过4个RTT时间cwnd从1个MSS增加到慢启动阈值16
增加到慢启动阈值后，线性增加慢。 在一个RTT时间内收到所有确认只能增加1个MSS
丢...
CSS hack大全 - 创意 - 清泛网 - 专注C/C++及内核技术
...巧大全
——作者：吴雷君
兼容范围：
IE:6.0+，FireFox:2.0+，Opera 10.0+，Sarari 3.0+，Chrome
参考资料：
各游览器常用兼容标记一览表:
标记
IE6
IE7
IE8
FF
Opera
Sarari
[*+><]
√
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Any way to modify Jasmine spies based on arguments?
...on of Jasmine, the syntax is slightly different:
1.3.1: .andCallFake(fn)
2.0: .and.callFake(fn)
Resources:
withArgs docs
callFake docs
andCallFake vs and.callFake
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Why doesn't C have unsigned floats?
...rts of problems if there are no negative values. Consider this:
float a = 2.0f, b = 10.0f, c;
c = a - b;
What value does c have? -8. But what would that mean in a system without negative numbers. FLOAT_MAX - 8 perhaps? Actually, that doesn't work as FLOAT_MAX - 8 is FLOAT_MAX due to precision eff...
HTML5 Email Validation
It is said "With HTML5, we need no more js or a server side code to check if the user's input is a valid email or url address"
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@Basic(optional = false) vs @Column(nullable = false) in JPA
...clipseLink Architecture Committee Member, TopLink Core Technical Lead, JPA 2.0 Expert Group Member) wrote a good answer on this topic so instead of paraphrasing him, I'll quote his answer:
The difference between optional and
nullable is the scope at which they
are evaluated. The definition o...
How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?
...her part of the content type separately (for example, you have some text/plain pages, and some text/html pages, but they are all UTF8.) Is my understanding correct?
– Eric Seastrand
Jan 29 '15 at 15:55
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CodeFile vs CodeBehind
...ile: You provide the source file with the solution for deployment. ASP.NET 2.0 runtime compiles the code when needed. The compiled files are at Microsoft.NET[.NET version]\Temporary ASP.NET Files.
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Open a new tab in gnome-terminal using command line [closed]
...
You can also have each tab run a set command.
gnome-terminal --tab -e "tail -f somefile" --tab -e "some_other_command"
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