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.NET console application as Windows service
I have console application and would like to run it as Windows service. VS2010 has project template which allow to attach console project and build Windows service.
I would like to not add separated service project and if possible integrate service code into console application to keep console appl...
Suppress warning CS1998: This async method lacks 'await'
...int result = ...;
return Task.FromResult(result);
}
In the case of throwing NotImplementedException, the procedure is a bit more wordy:
public Task<int> Fail() // note: no "async"
{
var tcs = new TaskCompletionSource<int>();
tcs.SetException(new NotImplementedException());
ret...
How to identify platform/compiler from preprocessor macros?
I'm writing a cross-platform code, which should compile at linux, windows, Mac OS. On windows, I must support visual studio and mingw.
...
Undefined symbols for architecture arm64
... armv7s.
Note though, this means you won't get the full power of the 64 bit processor. You said you are building for the 5s, so there may be some reason you need this. If you for some reason absolutely need that power (perhaps you are building a game), and desperately need those files, you coul...
No ConcurrentList in .Net 4.0?
...
The biggest scenario where a ConcurrentList would be a win would be when there isn't a whole lot of activity adding to the list, but there are many concurrent readers. One could reduce the readers' overhead to a single memory-barrier (and eliminate even that if readers weren't c...
Best practices for circular shift (rotate) operations in C++
...<stdint.h> // for uint32_t
#include <limits.h> // for CHAR_BIT
// #define NDEBUG
#include <assert.h>
static inline uint32_t rotl32 (uint32_t n, unsigned int c)
{
const unsigned int mask = (CHAR_BIT*sizeof(n) - 1); // assumes width is a power of 2.
// assert ( (c<=mask...
How to export and import environment variables in windows?
...
You can use RegEdit to export the following two keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
HKEY_CURRENT_USER\Environment
The first set are system/global environment variables; the second set are user-level variables. ...
Virtual Memory Usage from Java under Linux, too much memory used
...es! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 gigabytes ... at least by one form of measurement.
java -Xms1024m -Xmx4096m com.example.Hello
Different Ways to Measure Memory
On Linux, the top command gives you several different numbers fo...
How to count the number of set bits in a 32-bit integer?
8 bits representing the number 7 look like this:
55 Answers
55
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Reference — What does this symbol mean in PHP?
...it is faster. $i++ would have the same results.
Pre-increment is a little bit faster because it really increments the variable and after that 'returns' the result. Post-increment creates a special variable, copies there the value of the first variable and only after the first variable is used, repl...