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Proper use of beginBackgroundTaskWithExpirationHandler
... if (completion) {
//run the completion block and remove it from the completion block dictionary
completion();
[self.dictTaskCompletionBlocks removeObjectForKey:[NSNumber numberWithUnsignedLong:_key]];
}
}
@synchronized(self.dictTaskIdentifie...
Algorithm to calculate the number of divisors of a given number
... of O(N / log(log(N))) at best. Brute-force checking all possible divisors from 1 ... Sqrt(n) has a runtime complexity of O(Sqrt(N)) which is far superior. How come this answer has been accepted?
– le_m
Mar 13 '17 at 15:57
...
PHP function to build query string from array
I'm looking for the name of the PHP function to build a query string from an array of key value pairs. Please note, I am looking for the built in PHP function to do this, not a homebrew one (that's all a google search seems to return). There is one, I just can't remember its name or find it on php...
Git push won't do anything (everything up-to-date)
...ster, then a simple git push will always push your changes back.
However, from the output snippet you posted, you're on a branch called develop, which I'm guessing hasn't been set up to push to anything. So git push without arguments won't push commits on that branch.
When it says "Everything up-...
Checkstyle vs. PMD
...y, PMD will check your programming style
However, both softwares suffers from similar rules sometimes bad explained. With a bad configuration, you may check things twice or two opposite things i.e "Remove useless constructors" and "Always one constructor".
...
How do I make a textbox that only accepts numbers?
...mp; !char.IsControl(e.KeyChar);
}
NOTE: This DOES NOT prevent a user from Copy / Paste into this textbox. It's not a fail safe way to sanitize your data.
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What is “origin” in Git?
... push.
This name is set by default and for convention by Git when cloning from a remote for the first time.
This alias name is not hard coded and could be changed using following command prompt:
git remote rename origin mynewalias
Take a look at http://git-scm.com/docs/git-remote for further cl...
What is the difference between #include and #include “filename”?
...rce file is "searched for in an implementation-defined manner". See answer from piCookie.
– Richard Corden
Sep 17 '08 at 13:41
63
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Merge, update, and pull Git branches without using checkouts
...hat has 2 branches, A and B. I typically work on branch A, and merge stuff from branch B. For the merging, I would typically do:
...
Pushing read-only GUI properties back into ViewModel
...hat always knows the current state of some read-only dependency properties from the View.
6 Answers
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