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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);
...
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.
...
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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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
14
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Lock, mutex, semaphore… what's the difference?
...
A lock allows only one thread to enter the part that's locked and the lock is not shared with any other processes.
A mutex is the same as a lock but it can be system wide (shared by multiple processes).
A semaphore does the same as a mutex but allows x number of threads to enter, this...
How to play a local video with Swift?
... should add it using the plus button
3. Code
Open your View Controller and write this code.
import UIKit
import AVKit
import AVFoundation
class ViewController: UIViewController {
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
playVideo()
...
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...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
... copied from the storage engine layer to the SQL layer, VARCHAR fields are converted to CHAR to gain the advantage of working with fixed-width rows. So the strings in memory become padded out to the maximum length of your declared VARCHAR column.
When your query implicitly generates a temporary ta...
Rails update_attributes without save?
...ed, and they are to a degree, but this type of error can easily occur when converting data from an API, or even just using a series of data transformation and forgetting to Hash[] the results of the final .map. Maintain some code 50 lines above and 3 functions removed from your attribute assignment...