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Generate a random point within a circle (uniformly)
...Assuming random() gives a value between 0 and 1 uniformly)
If you want to convert this to Cartesian coordinates, you can do
x = centerX + r * cos(theta)
y = centerY + r * sin(theta)
Why sqrt(random())?
Let's look at the math that leads up to sqrt(random()). Assume for simplicity that we're wo...
How to get function parameter names/values dynamically?
...pt length. For example, it does not have the pop method. However it can be converted to a real Array:
var args = Array.prototype.slice.call(arguments);
If Array generics are available, one can use the following instead:
var args = Array.slice(arguments);
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Effects of changing Django's SECRET_KEY
I made a mistake and committed my Django project's SECRET_KEY into a public repository.
5 Answers
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MyISAM versus InnoDB [closed]
...ns of MySQL. Not that a MyISAM table that uses FULLTEXT indexing cannot be converted to an InnoDB table.
Conclusion
In conclusion, InnoDB should be your default storage engine of choice. Choose MyISAM or other data types when they serve a specific need.
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Checking images for similarity with OpenCV
...ive error between images.
double errorL2 = norm( A, B, CV_L2 );
// Convert to a reasonable scale, since L2 error is summed across all pixels of the image.
double similarity = errorL2 / (double)( A.rows * A.cols );
return similarity;
}
else {
//Images have a different size
ret...
When to use RDLC over RDL reports?
...ce of Reporting Services available, I develop new reports as RDLs and then convert them to local reports (which is easy) and deploy them as local reports.
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How do I grant myself admin access to a local SQL Server instance?
... to access sql server's data by copying the data files to another machine (and then copying back if needed), so your only way around this is to limit administrative permissions only to the ones who deserve it..
– yoel halb
Oct 11 '12 at 20:18
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Why does Maven have such a bad rep? [closed]
... in ant and half in maven. Once you commit, you have to put the work in to convert every part of your deployment.
– sal
May 14 '09 at 17:25
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Volatile vs. Interlocked vs. lock
...he point of volatile is that multiple threads running on multiple CPUs can and will cache data and re-order instructions.
If it is not volatile, and CPU A increments a value, then CPU B may not actually see that incremented value until some time later, which may cause problems.
If it is volatile, th...
In what areas might the use of F# be more appropriate than C#? [closed]
... F# (also written in F#). I actually did first experiments in C#, but then converted the code to F#.
CodeDOM provider needs to traverse some structure represented using .NET objects, so there isn't much space for inventing your own representations of data (which is the area where F# can offer nice...