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RAII and smart pointers in C++
...ay to describe this limitation in Java or C# is because there is no way to allocate on the stack. C# allows stack allocation through a special keyword however, you lose type saftey.
– ApplePieIsGood
Dec 28 '08 at 14:25
...
Increasing (or decreasing) the memory available to R processes
...sical RAM you
have installed.
If you get the error that R cannot
allocate a vector of length x, close
out of R and add the following line to
the ``Target'' field:
--max-vsize=500M
or as appropriate. You can always
check to see how much memory R has
available by typing a...
Can “using” with more than one resource cause a resource leak?
...What happens if font4 = new Font() throws after the unmanaged resource was allocated by the constructor but before the ctor returns and fills in font4 with the reference?
Let me make that a little bit more clear. Suppose we have:
public sealed class Foo : IDisposable
{
private int handle = 0;...
What is the difference between class and instance methods?
...hen be used like so:
[MyClass aClassMethod];
MyClass *object = [[MyClass alloc] init];
[object anInstanceMethod];
Some real world examples of class methods are the convenience methods on many Foundation classes like NSString's +stringWithFormat: or NSArray's +arrayWithArray:. An instance method...
What are the undocumented features and limitations of the Windows FINDSTR command?
... themselves: 0x09 Tab, 0x0A LineFeed, 0x0B Vertical Tab, 0x0C Form Feed, 0x0D Carriage Return.
XP FINDSTR also converts a number of extended ASCII characters to dots as well. The extended ASCII characters that display as dots on XP are the same as those that are transformed when supplied on the comm...
What is a StackOverflowError?
...
Parameters and local variables are allocated on the stack (with reference types, the object lives on the heap and a variable in the stack references that object on the heap). The stack typically lives at the upper end of your address space and as it is used up...
Execute a terminal command from a Cocoa app
...;
NSFileHandle *file = pipe.fileHandleForReading;
NSTask *task = [[NSTask alloc] init];
task.launchPath = @"/usr/bin/grep";
task.arguments = @[@"foo", @"bar.txt"];
task.standardOutput = pipe;
[task launch];
NSData *data = [file readDataToEndOfFile];
[file closeFile];
NSString *grepOutput = [[NSS...
What happens when there's insufficient memory to throw an OutOfMemoryError?
...n OutOfMemoryError.
So, it does a computation in advance before doing allocation of the object.
What happens is that the JVM tries to allocate memory for an object in the memory called Permanent Generation region (or PermSpace). If allocation fails (even after the JVM invokes the Garbage Col...
Catching java.lang.OutOfMemoryError?
... to do so).
In general, the OutOfMemoryError occurs due to a block memory allocation that cannot be satisfied with the remaining resources of the heap.
When the Error is thrown the heap contains the same amount of allocated objects as before the unsuccessful allocation and now is the time to drop ...
Tools for analyzing performance of a Haskell program
...ith +RTS -s
$ time ./A +RTS -s
./A +RTS -s
749700
9,961,432,992 bytes allocated in the heap
2,463,072 bytes copied during GC
29,200 bytes maximum residency (1 sample(s))
187,336 bytes maximum slop
**2 MB** total memory in use (0 MB lost due to fragmentat...