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TCP 的那些事儿（上） - 更多技术 - 清泛网 - 专注C/C++及内核技术
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很多人会问，为什么建链接要3次握手，断链接需要4次挥手？
对于建链接的3次握手，主要是要初始化Sequence Number 的初始值。通信的双方要互相通知对方自己的初始化的Sequence Number（缩写为ISN：Inital Sequence Number）——所...
getting the screen density programmatically in android?
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534
You can get info on the display from the DisplayMetrics struct:
DisplayMetrics metrics = getRes...
Remap values in pandas column with a dict
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DSMDSM
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width:auto for fields
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answered Jan 7 '11 at 2:54
BenBen
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Django: “projects” vs “apps”
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+1... "What is to stop you using myproduct.myproduct?" - Django's "startapp" command actually stops you, I assume, as a convention. I like c...
How unique is UUID?
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470
Very safe:
the annual risk of a given person being hit by a meteorite is
estimated to b...
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
...ld also make sure that your web.xml is declared conform at least Servlet 2.4 and thus not as Servlet 2.3 or older. Otherwise EL expressions inside JSTL tags would in turn fail to work. Pick the highest version matching your target container and make sure that you don't have a <!DOCTYPE> anywhe...
How to update Ruby to 1.9.x on Mac?
...gems sets without colliding with the system version.
I'll add that now (4/2/2013), I use rbenv a lot, because my needs are simple. RVM is great, but it's got a lot of capability I never need, so I have it on some machines and rbenv on my desktop and laptop. It's worth checking out both and seeing...
In-place edits with sed on OS X
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answered Sep 27 '11 at 17:44
whittlewhittle
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How to remove focus border (outline) around text/input boxes? (Chrome) [duplicate]
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2442
This border is used to show that the element is focused (i.e. you can type in the input or pre...