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Change priorityQueue to max priorityqueue
... +1;
if (lhs.equals(rhs)) return 0;
return -1;
}
});
Now, the priority queue will reverse all its comparisons, so you will get the maximum element rather than the minimum element.
Hope this helps!
shar...
Error 5 : Access Denied when starting windows service
... is that, most services are run as LOCAL SERVICE or LOCAL SYSTEM accounts. Now when you run C:/my-admin-dir/service.exe with those accounts but they are not allowed to execute anything in that directory, you will get error 5. So locate the executable of the service, RMB the directory -> Propertie...
Spinlock versus Semaphore
... few threads are contending for the lock at the same time. Of course every now and then two threads will try to acquire the lock at the same time (if this couldn't happen you wouldn't need a lock!), but this is rather the exception than the rule in a "healthy" system.
In such a case, a spinlock g...
Auto margins don't center image in page
...a flexbox: display: flex; align-items: center; justify-content: center and now your content is horizontally and vertically centered. Or move that to align-self: center; justify-self: center on the content itself. css-tricks.com/snippets/css/a-guide-to-flexbox
– Mike 'Pomax' Kam...
What is getattr() exactly and how do I use it?
...here getattr can be useful.
you can't write object.x, because you don't know in advance which attribute you want (it comes from a string). Very useful for meta-programming.
you want to provide a default value. object.y will raise an AttributeError if there's no y. But getattr(object, 'y', 5) will...
Wrapping chained method calls on a separate line in Eclipse for Java
... list at the left, select:
Function Calls → Qualified invocations
Now below this list, set Line wrapping policy to:
Wrap all elements, except first element if not necessary
Check:
Force split, even if line shorter than maximum line width
Finally, set Indentation policy to (thank...
Curious null-coalescing operator custom implicit conversion behaviour
...ils here. We have a nullable optimizer that looks for situations where we know that a particular expression of nullable type cannot possibly be null. Consider the following naive analysis: we might first say that
result = Foo() ?? y;
is the same as
A? temp = Foo();
result = temp.HasValue ?
...
How to clear gradle cache?
...
EDIT: cleanBuildCache no longer works
android gradle plugin now utilizes gradle cache feature
REF: https://guides.gradle.org/using-build-cache/
TO CLEAR CACHE
Clean the cache directory to avoid any hits from previous builds
rm -rf $GRADLE_HOME/caches/build-cache-*
RE...
ASP.NET MVC Razor Concatenation
... This gave me the variable in parenthesis. It appears that Razor now understands that an underscore + a variable = a string + a variable.
– Hugh Seagraves
Nov 5 '19 at 20:10
...
How do I set up NSZombieEnabled in Xcode 4?
...orting.
A typical case is when you over-release an object and you don't know which one:
With zombies: -[UITableView release]: message sent to deallocated instance
Without zombies:
This Xcode setting is ignored when you archive the application for App Store submission. You don't need to to...