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In which order should floats be added to get the most precise result?
...lue to the total that best matches its magnitude, and when a running total starts to get too big for its magnitude, add it into the next total up and start a new one. Taken to its logical extreme, this process is equivalent to performing the sum in an arbitrary-precision type (so you'd do that). But...
Regular Expression for alphanumeric and underscores
...ns, and probably a lot of other languages as well.
Breaking it down:
^ : start of string
[ : beginning of character group
a-z : any lowercase letter
A-Z : any uppercase letter
0-9 : any digit
_ : underscore
] : end of character group
* : zero or more of the given characters
$ : end of string
If ...
What Computer Science concepts should I know? [closed]
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You can start with a Wikipedia article I linked to - it's both quite simple and mathematically correct.
– sharptooth
Apr 14 '09 at 12:56
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OwinStartup not firing
I had the OwinStartup configuration code working perfectly and then it stopped working. Unfortunately I'm not sure exactly what I did to get it to stop working and am having a really hard time figuring it out.
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How to log a method's execution time exactly in milliseconds?
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NSDate *methodStart = [NSDate date];
/* ... Do whatever you need to do ... */
NSDate *methodFinish = [NSDate date];
NSTimeInterval executionTime = [methodFinish timeIntervalSinceDate:methodStart];
NSLog(@"executionTime = %f", executionTi...
SQL Server Installation - What is the Installation Media Folder?
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Clicking the exe starts the installer, which unzips files to a temporary location and cleans them up afterward. The zip rename isn't necessary if you open the exe directly with 7zip, but it does help clarify the answer and show that the exe i...
Peak detection in a 2D array
... rough and ready approach, "the dumbest thing that could possibly work":
Start with five toe coordinates in roughly the place you expect.
With each one, iteratively climb to the top of the hill. i.e. given current position, move to maximum neighbouring pixel, if its value is greater than current p...
How to use wait and notify in Java without IllegalMonitorStateException?
...condition after they wake up to see whether they need to wait again or can start processing.
Use the same object for calling wait() and notify() method; every object has its own lock so calling wait() on object A and notify() on object B will not make any sense.
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How to get current relative directory of your Makefile?
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From the GNU Make manual (page 51): " when GNU make starts (after it has processed any -C options) it sets the variable CURDIR to the pathname of the current working directory." Not the location of where the Makefile is located - although, they might be the same.
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UITableView : viewForHeaderInSection: not called during reloadData:
...fine, until one day, with no change on my part, they didn't. That's when I started experimenting to discover what the minimal requirements are for viewForHeader to be called. And now I know. And now so do you.
– matt
Oct 2 '14 at 15:22
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