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Storing time-series data, relational or non?
... creating a system which polls devices for data on varying metrics such as CPU utilisation, disk utilisation, temperature etc. at (probably) 5 minute intervals using SNMP. The ultimate goal is to provide visualisations to a user of the system in the form of time-series graphs.
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Attempted to read or write protected memory. This is often an indication that other memory is corrup
...out, the problem was that I changed the Platform for Build from x86 to Any CPU and that was enough to trigger this error. Changing it back to x86 did the trick. Might help someone.
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Wi-Fi 是什么的缩写 - 程序人生、谈天论地 - 清泛IT论坛，有思想、有深度
...试产品是否符合标准，导致 802.11 产品间的互通频频出现问题，而联盟的成立就是为了填补这一空缺。联盟还将推广符合 802.11 标准的无线网络技术作为己任，因此他们认为需要一个朗朗上口的名字来代替拗口的专业术语（呃…...
Compile Views in ASP.NET MVC
...it (I find it fine on a large-ish project with 4GB ram and a hyperthreaded CPU) but I easily make back the time I spend waiting for it, and I end up doing fewer operations on my code as R# provides higher level operations that batch together the many steps I'd have to take to achieve the same task m...
What does “dereferencing” a pointer mean?
... cases the pointer may be relative to some specific memory area, which the CPU may select based on CPU "segment" registers or some manner of segment id encoded in the bit-pattern, and/or looking in different places depending on the machine code instructions using the address.
For example, an int* p...
惨不忍睹：说一说你最穷的时候是什么样子 - 创意 - 清泛网 - 专注C/C++及内核技术
...话说，一分钱难倒英雄汉，有的时候没钱真的很难。那么问题来了，...
每个人的一生中都会和金钱打交道，每个人也都会遇到囊中羞涩的时候。俗话说，一分钱难倒英雄汉，有的时候没钱真的很难。那么问题来了，你最穷...
What is the most effective way for float and double comparison?
...le floating-point operation is 0.5
// units in the last place. On Intel CPU's, all floating-point
// calculations are done with 80-bit precision, while double has 64
// bits. Therefore, 4 should be enough for ordinary use.
//
// See the following article for more details on ULP:
// htt...
How can I transition height: 0; to height: auto; using CSS?
...uite like the jQuery slideUp/Down. You can see a difference only with weak CPU's, like old computers or mobile, and opening and closing many of them at the same time.
– Cruz Nunez
Jul 1 '16 at 4:12
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App Inventor 2 列表积木完全指南：从入门到精通，一篇搞定数据存储 - App...
做 App 的时候，你一定会遇到这样一个问题：数据太多了，变量根本管不过来。 比如一个购物清单有 20 样商品，难道要建 20 个变量？一个用户通讯录有 100 条记录，难道要写 100 个变量？当然不用。列表（Lists） 就是帮你批量管...
Should I Stop Stopwatch at the end of the method?
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Also a Stopwatch isn't doing any work or eating cpu clock cycles between the calls to Start() and Stop(). Start() just sets a timestamp to now and Stop() calculates and saves the time elapsed since that. See source in coreclr: github.com/dotnet/corefx/blob/master/src/…
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