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Which UUID version to use?
...ollide, unless you generate a billion UUIDs every second for a century and win a coin flip. Remember, set_size is 2^122, which is very big.
– Kevin
Aug 18 '15 at 1:17
8
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How to find the size of localStorage
...stion seems to indicate that JavaScript doesn't have a built in way of showing the size for a given variable. Does localStorage have a memory size property that I haven't seen? Is there an easy way to do this that I'm missing?
...
WCF timeout exception detailed investigation
...ng on IIS7 and various clients querying the service. The server is running Win 2008 Server. The clients are running either Windows 2008 Server or Windows 2003 server. I am getting the following exception, which I have seen can in fact be related to a large number of potential WCF issues.
...
使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
... Virtuality。它展示了一个全景图，其中包括一个从 3D 模型生成的 3D 对象。此演示中的对象是来自口袋妖怪游戏的皮卡丘。以下是应用程序在 Cardboard 视图中的外观：
3D 模型可以实现的一项令人兴奋的功能是动画，因此为了使...
Explanation of JSONB introduced by PostgreSQL
...storage «as is»
jsonb: no whitespaces
jsonb: no duplicate keys, last key win
jsonb: keys are sorted
More in speech video and slide show presentation by jsonb developers. Also they introduced JsQuery, pg.extension provides powerful jsonb query language
...
Batch file to delete files older than N days
...entation for more details.
For more goodies, refer to An A-Z Index of the Windows XP command line.
If you don't have forfiles installed on your machine, copy it from any Windows Server 2003 to your Windows XP machine at %WinDir%\system32\. This is possible since the EXE is fully compatible bet...
SVG gradient using CSS
...css and change the stop-color for each of those stops using plain classes.
Win!
Some benefits of using classes instead of :nth-child is that it'll not be affected if you reorder your stops. Also, it makes the intent of each class clear - you'll be left wondering whether you needed a blue color on ...
What’s the difference between “Array()” and “[]” while declaring a JavaScript array?
...They're the same!". Unfortunately you can't guarantee that.
Take the following example:
function Array() {
this.is = 'SPARTA';
}
var a = new Array();
var b = [];
alert(a.is); // => 'SPARTA'
alert(b.is); // => undefined
a.push('Woa'); // => TypeError: a.push is not a function
b.pus...
Download file from web in Python 3
... @Corey: Right from the docs: "21.6.24. Legacy interface The following functions and classes are ported from the Python 2 module urllib (as opposed to urllib2). They might become deprecated at some point in the future." ...and I agree on Oleh's "not sure why"
– cfi
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What should my Objective-C singleton look like? [closed]
...tances of the singleton and attempt to CAS it into position. Whichever one wins the CAS returns immediately, whichever one loses releases the instance it just allocated and returns the (now set) sharedInstance. The single OSAtomicCompareAndSwapPtrBarrier acts as both a write barrier for the setting ...