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What integer hash function are good that accepts an integer hash key?
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Knuth's multiplicative method:
hash(i)=i*2654435761 mod 2^32
In general, you should pick a multiplier that is in the order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function covers all your hash space uniformly.
Edit: The biggest...
Eclipse: How do i refresh an entire workspace? F5 doesn't do it
...ic Working Sets plugin(which means no maintenance after setting up some regexes).
– inger
Jan 4 '12 at 17:01
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Is APC compatible with PHP 5.4 or PHP 5.5?
...arible - make it point to the right php directory (where you have your php.exe file and which is used by your local server).
If you need deeper explanation let me know in the comment below. Regards.
Store password in TortoiseHg
...ange myUser and MyOPas for your credentials and the path to: TortoisePlink.exe.
Edit the mercurial.ini
[reviewboard]
password = myPass
[ui]
username = myUser
ssh = "C:\Program Files\TortoiseHg\lib\TortoisePlink.exe" -l myUser -pw myPass
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Convert an integer to a float number
...re is no float type. Looks like you want float64. You could also use float32 if you only need a single-precision floating point value.
package main
import "fmt"
func main() {
i := 5
f := float64(i)
fmt.Printf("f is %f\n", f)
}
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Difference Between Invoke and DynamicInvoke
...mparison, the following in release mode outside of the debugger (a console exe) prints:
Invoke: 19ms
DynamicInvoke: 3813ms
Code:
Func<int,int> twice = x => x * 2;
const int LOOP = 5000000; // 5M
var watch = Stopwatch.StartNew();
for (int i = 0; i < LOOP; i++)
{
twice.Invoke(3);
}...
Why do I need 'b' to encode a string with Base64?
...ennart RegebroLennart Regebro
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How do I apply a diff patch on Windows?
...wever, running Windows 7 or newer you need to update the manifest of patch.exe to avoid having the UAC pop-up each time. See this page for a how-to: math.nist.gov/oommf/software-patchsets/patch_on_Windows7.html
– Anttu
Feb 5 '14 at 6:41
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What are the undocumented features and limitations of the Windows FINDSTR command?
...for this section. There are 3 distinct parsing phases involved:
First cmd.exe may require some quotes to be escaped as ^" (really nothing to do with FINDSTR)
Next FINDSTR uses the pre 2008 MS C/C++ argument parser, which has special rules for " and \
After the argument parser finishes, FINDSTR addi...
How do you run a single query through mysql from the command line?
... C:\Program Files (x86)\MySQL\MySQL Server 5.7\bin>mysql.exe -u root -p -e "my query"---->ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
– Dr.jacky
Mar 12 '17 at 11:38
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