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How can I export tables to Excel from a webpage [closed]
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+100
Far and away, the cleanest, easiest export from tables to Excel is Jquery DataTables Table Tools plugin. You get a grid that sorts,...
Python Infinity - Any caveats?
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100
Python's implementation follows the IEEE-754 standard pretty well, which you can use as a guid...
What does O(log n) mean exactly?
...t takes 1 second to compute 10 elements, it will take 2 seconds to compute 100 elements, 3 seconds to compute 1000 elements, and so on.
It is O(log n) when we do divide and conquer type of algorithms e.g binary search. Another example is quick sort where each time we divide the array into two pa...
Regular expression for floating point numbers
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+100
I don't think that any of the answers on this page at the time of writing are correct (also many other suggestions elsewhere on SO a...
Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...pace objects, 0(0B) LOS objects, 75% free, 23MB/95MB, paused 2.079ms total 100.522ms
......
10-06 00:59:48.059 xxx I/art: Explicit concurrent mark sweep GC freed 4693(172KB) AllocSpace objects, 0(0B) LOS objects, 75% free, 23MB/95MB, paused 2.227ms total 101.692ms
......
我们知道，类似上...
How to design a database for User Defined Fields?
...ct layer.
You lose the ability to efficiently manage your schema. Is a 100-character varchar the right type for the "value" field? 200-characters? Should it be nvarchar instead? It can be a hard trade-off and one that ends with you having to place artificial limits on the dynamic nature of you...
How do I profile memory usage in Python?
...3 28 16 164 93 list
2 1 33 12 7 176 100 int
>>> x=[]
>>> h.iso(x).sp
0: h.Root.i0_modules['__main__'].__dict__['x']
>>>
share
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i...
What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
...nt numbers to be specified
in scientific notation, like 1.0e-34
and 10e100. The LC_NUMERIC locale
determines the decimal-point
character. Do not report overflow,
underflow, or conversion errors. Use
the following collating sequence:
Lines that do not start with numbers
(all consider...
Use of Finalize/Dispose method in C#
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I agree with pm100 (and should have explicitly said this in my earlier post).
You should never implement IDisposable in a class unless you need it. To be very specific, there are about 5 times when you would ever need/should implement IDi...
How do BitTorrent magnet links work?
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+100
Peer discovery and resource discovery (files in your case) are two different things.
I am more familiar with JXTA but all peer to p...