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Why do I want to avoid non-default constructors in fragments?
I am creating an app with Fragments and in one of them, I created a non-default constructor and got this warning:
6 Answe...
What is the largest Safe UDP Packet Size on the Internet
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It is true that a typical IPv4 header is 20 bytes, and the UDP header is 8 bytes. However it is possible to include IP options which can increase the size of the IP header to as much as 60 bytes. In addition, sometimes it i...
What are the options for storing hierarchical data in a relational database? [closed]
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My favorite answer is as what the first sentence in this thread suggested. Use an Adjacency List to maintain the hierarchy and use Nested Sets to query the hierarchy.
The problem up until now has been that the coversion method from...
What does Provider in JAX-RS mean?
...vider’ annotation does? I have been reading documentation but I cant get it.
If there are resource classes that service the incoming requests, what do Providers do? How are they different from singleton resource classes when I create a persistent resource class (the one that is not per-request)?...
What is the difference between a thread and a fiber?
...erative threads. Both are separate execution paths for your application.
With threads: the current execution path may be interrupted or preempted at any time (note: this statement is a generalization and may not always hold true depending on OS/threading package/etc.). This means that for threads, ...
[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
...a theme a light scheme and also enabled a dark scheme */
/* deal with light scheme first */
@media (prefers-color-scheme: light) {
:root {
--primary: #222222;
--secondary: #ffffff;
--tertiary: #0088cc;
--quaternary: #e45735;
...
Is there a Java reflection utility to do a deep comparison of two objects?
I'm trying to write unit tests for a variety of clone() operations inside a large project and I'm wondering if there is an existing class somewhere that is capable of taking two objects of the same type, doing a deep comparison, and saying if they're identical or not?
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Which characters are valid/invalid in a JSON key name?
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No. Any valid string is a valid key. It can even have " as long as you escape it:
{"The \"meaning\" of life":42}
There is perhaps a chance you'll encounter difficulties loading such values into some languages, which try to associate keys with object field nam...
How to change theme for AlertDialog
...new ContextThemeWrapper(this, R.style.AlertDialogCustom));
And then style it like you want:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="AlertDialogCustom" parent="@android:style/Theme.Dialog">
<item name="android:textColor">#00FF00</item&g...
What are the advantages of using a schema-free database like MongoDB compared to a relational databa
...used to using relational databases like MySQL or PostgreSQL, and combined with MVC frameworks such as Symfony, RoR or Django, and I think it works great.
...