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Good Hash Function for Strings
...unique hash key. Is there any mathematical proof ? I think we have to take mod of hash with another bigger prime number, otherwise overflow problem occurs.
– devsda
Sep 4 '13 at 5:56
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Using port number in Windows host file
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What you want can be achieved by modifying the hosts file through Fiddler 2 application.
Follow these steps:
Install Fiddler2
Navigate to Fiddler2 menu:- Tools > HOSTS.. (Click to select)
Add a line like this:-
localhost:8080 www.mydomainname.c...
Creating default object from empty value in PHP?
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@Tomas Do we need to do this again? The mods cleaned up the comment thread last time because it added little of value. There is no "old PHP" implicit object creation. It was always an error and always issued a warning, just that it was changed from E_STRICT to E_W...
What are the mathematical/computational principles behind this game?
... This sounds awesome, but I have no certainty that it actually models the problem well. @ypercube, could you explain a bit more why you think the analogy between card/picture and point/line is valid?
– Nate Kohl
Jun 5 '11 at 4:03
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Is there a MySQL option/feature to track history of changes to records?
...ATE TABLE MyDB.data_history LIKE MyDB.data;
ALTER TABLE MyDB.data_history MODIFY COLUMN primary_key_column int(11) NOT NULL,
DROP PRIMARY KEY, ENGINE = MyISAM, ADD action VARCHAR(8) DEFAULT 'insert' FIRST,
ADD revision INT(6) NOT NULL AUTO_INCREMENT AFTER action,
ADD dt_datetime DATETIME...
How do I run all Python unit tests in a directory?
I have a directory that contains my Python unit tests. Each unit test module is of the form test_*.py . I am attempting to make a file called all_test.py that will, you guessed it, run all files in the aforementioned test form and return the result. I have tried two methods so far; both have fail...
FFMPEG (libx264) “height not divisible by 2”
...istorts the picture. If you're worried about filtering speed, use scale=iw+mod(iw,2):ih+mod(ih,2):flags=neighbor. This can only increase each dimension by 1, if needed, and will duplicate the last row/column.
– Gyan
Feb 4 '19 at 15:59
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Multiple linear regression in Python
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sklearn.linear_model.LinearRegression will do it:
from sklearn import linear_model
clf = linear_model.LinearRegression()
clf.fit([[getattr(t, 'x%d' % i) for i in range(1, 8)] for t in texts],
[t.y for t in texts])
Then clf.coef_ ...
How to render a DateTime in a specific format in ASP.NET MVC 3?
If I have in my model class a property of type DateTime how can I render it in a specific format - for example in the format which ToLongDateString() returns?
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Why do people say there is modulo bias when using a random number generator?
...one here which will hopefully help people understand why exactly there is "modulo bias" when using a random number generator, like rand() in C++.
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