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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
...will wait until dest is ready before executing. This false dependency is (now) documented by Intel as erratum HSD146 (Haswell) and SKL029 (Skylake)
Skylake fixed this for lzcnt and tzcnt.
Cannon Lake (and Ice Lake) fixed this for popcnt.
bsf/bsr have a true output dependency: output unmodified for...
How to enable local network users to access my WAMP sites?
...0.1 or ::1
But as it is a full version of Apache all you need is a little knowledge of the server you are using.
The simple ( hammer to crack a nut ) way is to use the 'Put Online' wampmanager menu option.
left click wampmanager icon -> Put Online
This however tells Apache it can accept connecti...
Memcached vs APC which one should I choose? [closed]
...is (also APC will get integrated into php6 iirc, so why not start using it now).
You can/should use both for different purposes.
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Equivalent to 'app.config' for a library (DLL)
...h name: DllName.dll.config, otherwise the below code won't work properly.
Now to read from this file have such function:
string GetAppSetting(Configuration config, string key)
{
KeyValueConfigurationElement element = config.AppSettings.Settings[key];
if (element != null)
{
stri...
How to write the Fibonacci Sequence?
... + b
Display startNumber to endNumber only from Fib sequence.
Once you know how to generate Fibonacci Numbers you just have to cycle trough the numbers and check if they verify the given conditions.
Suppose now you wrote a f(n) that returns the n-th term of the Fibonacci Sequence (like the one w...
Is git-svn dcommit after merging in git dangerous?
...s squash technic I used before is no longer required.
My new workflow is now as follows:
I have a "master" branch that is the only branch that I dcommit from and that clone the SVN repository (-s assume you have a standard SVN layout in the repository trunk/, branches/, and tags/):
git svn clo...
How to make exe files from a node.js app?
...
For anyone stumbling upon this question, there are now two projects that create exes out of your node projects, Pkg and Electron.atom.io , they differ slightly:
Pkg will compile your project to native code, they also include assets AND a nodejs installation ( the s...
How to properly seed random number generator
... simply call Intn to get the next random integer.
Move the rand.Seed(time.Now().UTC().UnixNano()) line from the randInt function to the start of the main and everything will be faster.
Note also that I think you can simplify your string building:
package main
import (
"fmt"
"math/rand"
...
Node.js check if file exists
...
Anyone reading this now (Node.js v0.12.x) keep in mind that fs.exists and fs.existsSync have also been deprecated. The best way to check file existence is fs.stat, as demoed above.
– Antrikshy
Mar 29 '15 at...
Achieving bright, vivid colors for an iOS 7 translucent UINavigationBar
...lpha channel in the UINavigationBar has been ignored in this update. Right now, the best solution seems to be to just 'deal with it' and hope that whatever color you choose can render a translucent effect. I am still looking into ways of getting around this.
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