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What is a loop invariant?
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@Tomas Petricek - when the loop terminates, i = 10 and j = -1; so the weaker invariant example you gave may not be correct (?)
– Raja
Apr 7 '12 at 22:47
7
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iOS app, programmatically get build version
...le.mainBundle().infoDictionary?["CFBundleShortVersionString"] as! String
and the "Build":
Swift 3
let build = Bundle.main.infoDictionary?[kCFBundleVersionKey as String] as? String
ObjC
NSString *build = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString *)kCFBundleVersionKey];
S...
What are the most common non-BMP Unicode characters in actual use? [closed]
... at statistics of text usage on the Web from the Common Crawl, by the way, and found that emoji are also the most common non-BMP characters on the Web now. They're not as common as on Twitter, of course. ???? is still the most common one.
– rspeer
Aug 12 '15 at...
Random string generation with upper case letters and digits
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Answer in one line:
''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(N))
or even shorter starting with Python 3.6 using random.choices():
''.join(random.choices(string.ascii_uppercase + string.digits, k=N))
A cryptographi...
Using str_replace so that it only acts on the first match?
... Another downside is you have to use preg_quote() on the "needle" and escape meta-characters $ and \ in the replacement.
– Josh Davis
Aug 10 '09 at 2:53
32
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PHP DateTime::modify adding and subtracting months
I've been working a lot with the DateTime class and recently ran into what I thought was a bug when adding months. After a bit of research, it appears that it wasn't a bug, but instead working as intended. According to the documentation found here :
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Ant: How to execute a command for each file in directory?
I want to execute a command from an Ant buildfile, for each file in a directory.
I am looking for a platform-independent solution.
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Best way to detect Mac OS X or Windows computers with JavaScript or jQuery
...m trying to move a "close" button to the left side when the user is on Mac and the right side when the user is on PC. Now I'm doing it by examining the user agent, but it can be too easily spoofed for reliable OS detection. Is there a surefire way to detect whether the OS on which the browser is run...
What is the command to list the available avdnames
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AFAIK android list avd avdmanager list avd is what you need.
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UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1
...TF-8. I've tried numerous things, including using string.encode('utf-8') and unicode(string) , but I get the error:
16 A...