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What integer hash function are good that accepts an integer hash key?
...
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...
Debug code-first Entity Framework migration codes
...er the model been created.
So step by step:
comment the seed method and execute the update-database to create the model
uncomment the method Seed() and plugin the "hack" I mentioned above.
in the configuration disable Auto migrations
AutomaticMigrationsEnabled = false;//if you have this disabled...
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)
}
...
Disable assertions in Python
...t;module>
AssertionError
Note that by disable I mean it also does not execute the expression that follows it:
$ python -Oc "assert 1/0"
$ python -c "assert 1/0"
Traceback (most recent call last):
File "<string>", line 1, in <module>
ZeroDivisionError: integer division or modulo ...
Why do I need 'b' to encode a string with Base64?
...ennart RegebroLennart Regebro
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CSS hack大全 - 创意 - 清泛网 - 专注C/C++及内核技术
...
Firefox
Opera
Safari(Chrome)
Opera的辨别色是深绿色，Opera游览器很时髦么。 Firefox的辨别色是浅绿色，Firefox是很强大的游览器。 Safari和Chrome的辨别色是金黄色，Safari和Chrome使用的都是Webkit内核
part2 —— CSS hack...
How do I run a Python program?
...ming Python2.6, installed in the usual location):
> C:\Python26\python.exe first.py
(Advanced users: instead of first.py, you could write out first.py's full path of C:\Documents and Settings\Gregg\Desktop\pyscripts\first.py)
Putting Python In Your Path
Windows
In order to run programs, you...
Which Visual C++ file types should be committed to version control?
...ject element
vcxproj: project file
No:
aps: last resource editor state
exe: build result
idb: build state
ipch: build helper
lastbuildstate: build helper
lib: build result. Can be 3rd party
log: build log
manifest: build helper. Can be written yourself.
obj: build helper
pch: build helper
pdb:...
How to compile a 64-bit application using Visual C++ 2010 Express?
Is there a simple way to compile a 64 bit app with the 32-bit edition of Visual C++ 2010 Express? What configurations, if any, are necessary?
...
Correct way to quit a Qt program?
...gv);
...
if(!QSslSocket::supportsSsl()) return app.exit(0);
...
return app.exec();
}
The program will terminated if OpenSSL is not installed
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