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Hidden Features of Java
...d it, never heard of it before.
ThreadLocals are typically not so widely known as a way to store per-thread state.
Since JDK 1.5 Java has had extremely well implemented and robust concurrency tools beyond just locks, they live in java.util.concurrent and a specifically interesting example is the j...
Get file version in PowerShell
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Nowadays you can get the FileVersionInfo from Get-Item or Get-ChildItem, but it will show the original FileVersion from the shipped product, and not the updated version. For instance:
(Get-Item C:\Windows\System32\Lsasrv.dll...
Using emit vs calling a signal as if it's a regular function in Qt
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Do you know if there was ever an implementation (or a planned implementation) of an emit that actually did more than nothing? I find that having the 'syntactic sugar' in this case just confuses the novice (or at least me when I was ...
Using the RUN instruction in a Dockerfile with 'source' does not work
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And now how do I downvote the original answer and upvote the edit by 'a concerned'?
– Slava
Apr 24 '19 at 10:12
...
Find size of object instance in bytes in c#
...undocumented hacks. Do not rely on this working - even if it works for you now, it may stop working tomorrow, with any minor or major .NET update.
You can use the information in this article on CLR internals MSDN Magazine Issue 2005 May - Drill Into .NET Framework Internals to See How the CLR Creat...
How to disable “Save workspace image?” prompt in R?
... this to ~/.Rprofile:
qs <- function(save="yes") { q(save=save)}
So now q() quits without saving (or prompting) but qs() will save and quit (also without prompting)
share
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improve this answe...
Unmangling the result of std::type_info::name
... C++11 features, here is how it can be done in C++98, the file type.cpp is now:
#include "type.hpp"
#ifdef __GNUG__
#include <cstdlib>
#include <memory>
#include <cxxabi.h>
struct handle {
char* p;
handle(char* ptr) : p(ptr) { }
~handle() { std::free(p); }
};
std::st...
Why do some scripts omit the closing PHP tag, '?>'? [duplicate]
...ot of stuff with php, why should inject JS. I was fool then, and still one now. What was I thinking.
– Nafis Ahmad
Dec 1 '13 at 16:45
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How to set up tmux so that it starts up with specified windows opened?
... that.
------------
| tail |
|----------|
| | top |
------------
Now I tried to again sub-divide the bottom left pane, so switching either back using last-pane, or in more complex windows, with the select-pane -t 1 where 1 is the number of the pane in order created starting with 0.
tmux n...
How to use git bisect?
...ment history:
... --- 0 --- 1 --- 2 --- 3 --- 4* --- 5 --- current
You know that your program is not working properly at the current revision, and that it was working at the revision 0. So the regression was likely introduced in one of the commits 1, 2, 3, 4, 5, current.
You could try to check o...