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Is Meyers' implementation of the Singleton pattern thread safe?
...ms, while most forms of double-checked locking pattern variants may suffer from race conditions on certain architectures, unless instructions are interleaved with strategically places memory barriers.
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Input text dialog Android
...= "";
Within the OnClickListener of your button (or in a function called from there):
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Title");
// Set up the input
final EditText input = new EditText(this);
// Specify the type of input expected; this, for example, s...
Open-sided Android stroke?
...ion="1.0" encoding="UTF-8"?>
<!-- inset is used to remove border from top, it can remove border from any other side-->
<inset xmlns:android="http://schemas.android.com/apk/res/android"
android:insetTop="-2dp"
>
<shape xmlns:android="http://schemas.androi...
What exactly are “spin-locks”?
...p ("spin") till the other core releases the lock. This prevents the thread from losing its quantum and continue as soon as the lock gets released. The simple mechanism of spinlocks allows a kernel to utilize it in almost any state.
That's why on a single core machine a spinlock is simply a "disable ...
Passing functions with arguments to another function in Python?
...
You can use the partial function from functools like so.
from functools import partial
def perform(f):
f()
perform(Action1)
perform(partial(Action2, p))
perform(partial(Action3, p, r))
Also works with keywords
perform(partial(Action4, param1=p))
...
Is embedding background image data into CSS as Base64 good or bad practice?
...der-encoder.asp (upload)
http://www.greywyvern.com/code/php/binary2base64 (from link with little tutorials underneath)
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What is the difference between declarative and procedural programming paradigms?
...ages that exhibit a hierarchy of types that inherit both methods and state from base types to derived types, but also includes the unusual prototype-based JavaScript.
Examples of programming languages which support the OO paradigm:
Java
Declarative
There are several sub-paradigms of the decla...
Connecting to remote URL which requires authentication using Java
...obably have to --add-modules javax.xml.bind since they removed the package from the default classpath. And in Java11+ it's removed altogether, you need an external dependency again. Such is progress!
– Ed Randall
Aug 18 '19 at 7:01
...
What's the yield keyword in JavaScript?
...on of the algorithm. Each time you call next(), the generator code resumes from the statement following the yield.
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Python memory leaks [closed]
...ected, check this small example:
install package via pip install pympler
from pympler.tracker import SummaryTracker
tracker = SummaryTracker()
# ... some code you want to investigate ...
tracker.print_diff()
The output shows you all the objects that have been added, plus the memory they consum...