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ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
...tive, operating system-specific
code, bypassing the standard JVM heap.
Setting up and tearing down direct
buffers could be significantly more
expensive than heap-resident buffers,
depending on the host operating system
and JVM implementation. The
memory-storage areas of direct buffers
...
Catching java.lang.OutOfMemoryError?
...static byte[] reserve = new byte[1024 * 1024]; // Reserves 1MB.
and then set it to zero during OOME:
} catch (OutOfMemoryException e) {
reserve = new byte[0];
// Ha! 1MB free!
}
Of course this makes all with all no sense ;) Just give JVM sufficient memory as your applictation require....
How do you clear a stringstream variable?
...r the error state of the stream, e.g. if a file stream has the error state set to eofbit (end-of-file), then calling clear() will set the error state back to goodbit (no error).
For clearing the contents of a stringstream, using:
m.str("");
is correct, although using:
m.str(std::string());
is...
How do I write the 'cd' command in a makefile?
...
Set SHELLFLAGS to -e -c and the shell will exit at the first command that fails.
– Timothy Baldwin
Aug 9 '19 at 23:48
...
What exactly does big Ө notation represent?
...rst let's understand what big O, big Theta and big Omega are. They are all sets of functions.
Big O is giving upper asymptotic bound, while big Omega is giving a lower bound. Big Theta gives both.
Everything that is Ө(f(n)) is also O(f(n)), but not the other way around.
T(n) is said to be in Ө(f(n...
Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
...ded to the standards before C++11, you have to remember that the standards-setting bodies have specific guidelines to follow. For example, ANSI C was specifically tasked to codify existing practice, not to create a new language. Otherwise, they could have gone crazy and given us Ada :-)
Later itera...
How do I get LaTeX to hyphenate a word that contains a dash?
...t
hyphenate, which could be troublesome. This is correct English
typesetting style (it may not be correct for other languages), but if
needs must, you can replace the hyphen in the name with a \hyph
command, defined
\def\hyph{-\penalty0\hskip0pt\relax}
This is not the sort of thing t...
Returning binary file from controller in ASP.NET Web API
...
Try using a simple HttpResponseMessage with its Content property set to a StreamContent:
// using System.IO;
// using System.Net.Http;
// using System.Net.Http.Headers;
public HttpResponseMessage Post(string version, string environment,
string filetype)
{
var path = @"C:\Temp\tes...
How do I convert uint to int in C#?
...@Luke - No, not necessarily. When casting it depends on your project build settings as to whether checked or unchecked arithmentic is the default. In addition, you can modify this on a local basis using the checked and unchecked keywords.
– Greg Beech
Jul 15 '0...
How to implement a queue with three stacks?
...ke to.
The third stack is also irrelevant. What matters is that there's a set of bounded stacks, and a set of unbounded stacks. The minimum needed for an example is 2 stacks. The number of stacks must be, of course, finite.
Lastly, if I am right that there's no proof, then there should be an easie...