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How can I tell if I'm running in 64-bit JVM or 32-bit JVM (from within a program)?
...
How can you tell from the command line? If you are running 32-bit or 64-bit? Just curious.
– Xonatron
Feb 2 '12 at 20:33
1...
Windows batch: formatted date into variable
..."Install MS SQL Server, connect with a SQL Client, and execute the command SELECT CONVERT(VARCHAR(16), GETDATE(), 112)".
– isapir
Oct 13 '17 at 20:38
2
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Get last n lines of a file, similar to tail
...] # blocks of size BLOCK_SIZE, in reverse order starting
# from the end of the file
while lines_to_go > 0 and block_end_byte > 0:
if (block_end_byte - BLOCK_SIZE > 0):
# read the last block we haven't yet read
f.seek(block_number*BLOCK_SIZ...
Does ARC support dispatch queues?
...sign, or retain attributes. It also means that if you refer to your queue from a block, the block will retain the queue automatically.
So if your deployment target is at least iOS 6.0 or Mac OS X 10.8, and you have ARC enabled, ARC will retain and release your queue, and the compiler will flag any...
filtering NSArray into a new NSArray in Objective-C
...y indexesOfObjectsPassingTest:] or write your own category to add a handy -select: or -filter: method (example).
Want somebody else to write that category, test it, etc.? Check out BlocksKit (array docs). And there are many more examples to be found by, say, searching for e.g. "nsarray block catego...
Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?
...ontained in app.js, in the canvasLoop(e) method.
The only thing I changed from the original demo was after the lines
x += movementX * 2;
y += movementY * 2;
I added two lines to represent random movement:
x += Math.floor(Math.random()*3 - 1);
y += Math.floor(Math.random()*3 - 1);
There are st...
How do I execute a command and get the output of the command within C++ using POSIX?
...} /* switch (pid = fork())*/
}
You also might want to play around with select() and non-blocking reads.
fd_set readfds;
struct timeval timeout;
timeout.tv_sec = 0; /* Seconds */
timeout.tv_usec = 1000; /* Microseconds */
FD_ZERO(&readfds);
FD_SET(childToParent[READ_FD], &...
Linux equivalent of the Mac OS X “open” command [closed]
I've found the "open" command in Mac OS X very handy in the command line. From "man open":
7 Answers
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How to change an application icon programmatically in Android?
...ication's icon from the program so next time they would see the previously selected icon in the launcher.
10 Answers
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How do I get Windows to go as fast as Linux for compiling C++?
...ss to Windows source code, it is rarely taken advantage of). Look at this selection of Unix-related performance papers: http://www.eecs.harvard.edu/margo/papers/ or look up the history of papers by Osterhaus, Henry Spencer, or others. Heck, one of the biggest (and most enjoyable to watch) debates i...