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@Basic(optional = false) vs @Column(nullable = false) in JPA
What's the difference between @Basic(optional = false) and @Column(nullable = false) in JPA persistence?
2 Answers
...
How do I use PHP namespaces with autoload?
...Person;
$class = new MyPerson\Class1();
Edit (2009-12-14):
Just to clarify, my usage of "use ... as" was to simplify the example.
The alternative was the following:
$class = new Person\Barnes\David\Class1();
or
use Person\Barnes\David\Class1;
// ...
$class = new Class1();
...
Obtain Bundle Identifier programmatically
How can I obtain a string of the Bundle Identifier programmatically from within my App?
6 Answers
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how to bypass Access-Control-Allow-Origin?
...ctively disables CORS protection, and leaves your users exposed to attack. If you're not completely certain that you need to allow all origins, you should lock this down to a more specific origin:
header('Access-Control-Allow-Origin: https://www.example.com')
Please refer to following stack answe...
How to simulate Android killing my process
Android will kill a process if it is in the background and the OS decides it needs the resources (RAM, CPU, etc.). I need to be able to simulate this behaviour during testing so that I can ensure that my application is behaving correctly. I want to be able to do this in an automated way so that I ca...
How do I create a Linked List Data Structure in Java? [closed]
...or
public LinkList() {
first = null;
}
//Returns true if list is empty
public boolean isEmpty() {
return first == null;
}
//Inserts a new Link at the first of the list
public void insert(int d1, double d2) {
Link link = new Link(d1, d2);
...
Apply formula to the entire column
...
=text(A1:A,"00000")
(very similar!) but before hitting Enter hit Ctrl+Shift+Enter.
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Best practices for reducing Garbage Collector activity in Javascript
...sion.
Avoid doing those, and pool and reuse objects where possible.
Specifically, look out for opportunities to:
Pull inner functions that have no or few dependencies on closed-over state out into a higher, longer-lived scope. (Some code minifiers like Closure compiler can inline inner functio...
How to check if all of the following items are in a list?
I found, that there is related question, about how to find if at least one item exists in a list:
How to check if one of the following items is in a list?
...
Get file size, image width and height before upload
... document.getElementById('preview');
const readImage = file => {
if ( !(/^image\/(png|jpe?g|gif)$/).test(file.type) )
return EL_preview.insertAdjacentHTML('beforeend', `Unsupported format ${file.type}: ${file.name}<br>`);
const img = new Image();
img.addEventListener('lo...