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What is a “cache-friendly” code?
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Optimizing cache usage largely comes down to two factors.
Locality of Reference
The first factor (to which others have already alluded) is locality of reference. Locality of reference really has two dimensions though: space and time.
Spatial
The spatial dimens...
System.BadImageFormatException: Could not load file or assembly [duplicate]
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@David How did you get "Mixed Platforms" in you dropdown. I have VS2013 and my only options are "Any CPU", "x64" and "x86".
– Ottak
Nov 12 '14 at 18:32
4
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How to prevent ifelse() from turning Date objects into numeric objects
...d on user selection of which attributes to preserve. The request is here: https://bugs.r-project.org/bugzilla/show_bug.cgi?id=16609 - It has already been flagged as "WONTFIX" on the grounds that it has always been the way it is now, but I have provided a follow-up argument on why a simple addition ...
What is JavaScript garbage collection?
...cope variable. All
of those objects are instructed to
tear themselves down, which destroys
any circular references.
The main purpose of garbage collection is to allow the programmer not to worry about memory management of the objects they create and use, though of course there's no avoid...
Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie
...y). For example, (2, 1) means that the point is 2 pixels left, and 1 pixel down.
You can read up more about coordinate systems here - http://en.wikipedia.org/wiki/Coordinate_system
But what you need to know is that, in iOS, every view has it's OWN coordinate system, where the top left corner is th...
How do I import CSV file into a MySQL table?
...ate a table before you can use mysqlimport.
– Marcus Downing
Jun 9 '15 at 10:47
@MladenJablanović, it's definitely no...
Running code in main thread from another thread
...s to do on the main thread
}
});
This does not involve passing down the Activity reference or the Application reference.
Kotlin Equivalent:
Handler(Looper.getMainLooper()).post(Runnable {
// things to do on the main thread
})
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Trim spaces from start and end of string
...an.com -- Faster JavaScript Trim and this pattern beat all the other HANDS down!
Using IE8, added test as test13. The results were:
Original length: 226002
trim1: 110ms (length: 225994)
trim2: 79ms (length: 225994)
trim3: 172ms (length: 225994)
trim4: 203ms (length:225994)
trim5: 172m...
Can you use CSS to mirror/flip text?
... mirror, but you can scale to any size you like to suit your needs. Upside down and backwards would be (-1, -1).
If you're interested in the best option available for cross browser support back in 2011, see my older answer.
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Rotating a two-dimensional array in Python
... the great wikipedia page on the subject (in "Common rotations" paragraph:
https://en.wikipedia.org/wiki/Rotation_matrix#Ambiguities
Then I wrote the following code, super verbose in order to have a clear understanding of what is going on.
I hope that you'll find it useful to dig more in the very ...