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Timer function to provide time in nano seconds using C++
... windows you want to use the QueryPerformanceCounter. And here is more on QPC
Apparently there is a known issue with QPC on some chipsets, so you may want to make sure you do not have those chipset. Additionally some dual core AMDs may also cause a problem. See the second post by sebbbi, where he s...
Converting RGB to grayscale/intensity
... = R^gamma, Glin = G^gamma, Blin = B^gamma
where gamma is 2.2 for many PCs.
The usual R G B are sometimes written as R' G' B' (R' = Rlin ^ (1/gamma))
(purists tongue-click) but here I'll drop the '.
Brightness on a CRT display is proportional to RGBlin = RGB ^ gamma,
so 50% gray on a CRT is qui...
Useful GCC flags for C
...olation 1 (check/write): time=1280862302.170759 ptr=0x7fff96eb3d00 size=44
pc=0x7f3a575503c1 location=`mf.c:4:2 (main)'
/usr/lib/libmudflap.so.0(__mf_check+0x41) [0x7f3a575503c1]
./a.out(main+0x90) [0x400a54]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f3a571e2c4d]
Nearby object 1: ...
Export a stash to another computer
...s:
git commit -a
then add it as a remote on computer 2:
git remote add pc1 user@computer1:/path/to/repo
now you can retrieve the remote information using
git fetch pc1
now you can import the commit in the way you want; using git cherry-pick, git rebase or whatever you like...
If you want it...
How to enable external request in IIS Express?
...rt Tools. Then run the following command from an administrative prompt:
httpcfg set urlacl /u http://vaidesg1:8080/ /a D:(A;;GX;;;WD)
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一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...的。
没有明确的商业变现模式，这是目前大数据创业的最大门槛。 拼数据，你拼不过阿里百度腾讯，拼钱，还是算了……
二、数据安全问题
据Verizon发布的《2015年数据泄露调查报告》显示，79790个安全事件中已有2122个确认的...
What is ANSI format?
...
Just in case your PC is not a "Western" PC and you don't know which code page is used, you can have a look at this page: National Language Support (NLS) API Reference
Can I call a constructor from another constructor (do constructor chaining) in C++?
...or: SomeType(string const &s) { /*...*/ } SomeType(char const *pc) : SomeType(string(pc)) { /*...*/ }
– Cyrille Ka
Sep 14 '15 at 18:14
...
Compile Views in ASP.NET MVC
...ler won't, such as missing/incorrect views and actions. R# will slow your PC down a bit (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 ope...
Bash empty array expansion with `set -u`
...
$ bash --version | head -n 1
GNU bash, version 4.4.19(1)-release (x86_64-pc-linux-gnu)
$ set -u
$ arr=()
$ echo "foo: '${arr[@]}'"
foo: ''
There is a conditional you can use inline to achieve what you want in older versions: Use ${arr[@]+"${arr[@]}"} instead of "${arr[@]}".
$ function args...