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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
...outline, cleaned-up the typos, generalized it to return an array of colors and got the whole thing to compile. Here is the result:
+ (NSArray*)getRGBAsFromImage:(UIImage*)image atX:(int)x andY:(int)y count:(int)count
{
NSMutableArray *result = [NSMutableArray arrayWithCapacity:count];
// ...
Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?
...pplications, the synchronously multithreaded one (based on HttpWebRequest) and asynchronous I/O one (based on HTTP client) produced similar results: about 10 seconds to execute using around 3% of the CPU and 30 MB of memory. The only difference between the two testers was that the multithreaded one ...
Does it make any sense to use inline keyword with templates?
Since templates are defined within headers and compiler is able to determine if inlining a function is advantageous, does it make any sense? I've heard that modern compilers know better when to inline a function and are ignoring inline hint.
...
Optimise PostgreSQL for fast testing
.... For example, PostgreSQL 9.2 significantly improves the speed of TRUNCATE and of course adds index-only scans. Even minor releases should always be followed; see the version policy.
Don'ts
Do NOT put a tablespace on a RAMdisk or other non-durable storage.
If you lose a tablespace the whole datab...
Webstorm: “Cannot Resolve Directory”
This is starting to bug me and I'd either like it turned off or fixed. So Webstorm has a sweet feature in it's HTML parser that will attempt to resolve directories in strings that are supposed to reference a file in your project. For example:
...
Append TimeStamp to a File Name
...ction), F (second fraction, trailing zeroes are trimmed), t (P.M or
A.M) and z (time zone).
With Extension Method
Usage:
string result = "myfile.txt".AppendTimeStamp();
//myfile20130604234625642.txt
Extension method
public static class MyExtensions
{
public static string AppendTimeStam...
Does it make sense to do “try-finally” without “catch”?
... resources to be cleaned up appropriately. Below is a concrete example of handling the exception from a calling method.
public void yourOtherMethod() {
try {
yourMethod();
} catch (YourException ex) {
// handle exception
}
}
public void yourMethod() throws YourExcep...
Configuring Log4j Loggers Programmatically
...ith
Logger.getRootLogger().getLoggerRepository().resetConfiguration();
and start with adding your own. You need log4j in the classpath of course for this to work.
Remark:
You can take any Logger.getLogger(...) you like to add appenders. I just took the root logger because it is at the bottom of...
Where is Vagrant saving changes to the VM?
I am just starting with Vagrant and I am having a little trouble understanding a few details. I have read through the docs but still am missing a basic concept. When I want to start a Vagrant box I run:
...
Selectively revert or checkout changes to a file in Git?
Is there a command that allows you to partially undo the changes to a file (or files) in the working directory?
4 Answers
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