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Performance differences between debug and release builds
...e JIT compiler can verify that a loop never indexes an array out of bounds then it will eliminate the index check. Big one.
Loop unrolling. Loops with small bodies are improved by repeating the code up to 4 times in the body and looping less. Reduces the branch cost and improves the processor's su...
How can I save an image to the camera roll?
...l? Is it already in your app's bundle, or does the user take a picture and then you save it to the camera roll?
– pasawaya
Jun 21 '12 at 3:42
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Can the :not() pseudo-class have multiple arguments?
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If you install the "cssnext" Post CSS plugin, then you can safely start using the syntax that you want to use right now.
Using cssnext will turn this:
input:not([type="radio"], [type="checkbox"]) {
/* css here */
}
Into this:
input:not([type="radio"]):not([type="c...
Application_Error not firing when customerrors = “On”
...m with this solution is that it does a 302 redirect to your error URLs and then those pages respond with a 200 status code. This leads to Google indexing the error pages which is bad. It also isn't very conformant to the HTTP spec. What I wanted to do was not redirect, and overrite the original resp...
Merge cells using EPPlus?
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Understanding reference counting with Cocoa and Objective-C
... decremented. If, after calling release, the reference count is now zero, then that object's memory is freed by the system.
The basic way this differs from malloc and free is that any given object doesn't need to worry about other parts of the system crashing because you've freed memory they were ...
What's the best way to put a c-struct in an NSArray?
...ys must be fully known. If it could get "larger" by referencing more data, then you would probably implement that with a pointer, and the @encode would describe the structure with that pointer, but not fully describe the pointed-to data, which could indeed change.
– Justin Spah...
How to generate and validate a software license key?
...eatures the user has to pay a license fee and receive a key. That key will then be entered into the application to "unlock" the full version.
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How to hide output of subprocess in Python 2.7
...ors with CalledProcessError. except subprocess.CalledProcessError as e and then use e.code or e.output
– Rodrigo E. Principe
Mar 10 '17 at 12:42
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How to see which commits in one branch aren't in the other?
...or me. My version of git does not know --one-line, therefore I removed it. Then I had to exchange devel and next and it worked. Very nice!
– Sascha Effert
Sep 28 '11 at 13:35
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