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JPA: How to have one-to-many relation of the same Entity type
...:
public static void main(String[] args) {
EntityManager em = ... // from EntityManagerFactory, injection, etc.
em.getTransaction().begin();
A parent = new A();
A son = new A();
A daughter = new A();
son.setParent(parent);
daughter.setParent(parent);
paren...
How to add a local repo and treat it as a remote repo
...t to share a locally created repository, or you want to take contributions from someone elses repository - if you want to
interact in any way with a new repository, it's generally easiest to
add it as a remote. You do that by running git remote add [alias]
[url]. That adds [url] under a local ...
Define preprocessor macro through CMake?
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From the linked page: "Note This command has been superseded by alternatives: Use add_compile_definitions() to add preprocessor definitions." Maybe this answer needs an edit?
– M.Herzkamp
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Comparing arrays in JUnit assertions, concise built-in way?
...thod is not available, you may have accidentally imported the Assert class from junit.framework.
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Package objects
...ort Swing._
to have all the goodness like onEDT and implicit conversions from Tuple2 to Dimension.
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How to add reference to a method parameter in javadoc?
Is there a way to add references to one or more of a method's parameters from the method documentation body?
Something like:
...
How to get the parents of a Python class?
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Use the following attribute:
cls.__bases__
From the docs:
The tuple of base classes of a class
object.
Example:
>>> str.__bases__
(<type 'basestring'>,)
Another example:
>>> class A(object):
... pass
...
>>> class B(obje...
How to define two fields “unique” as couple
... constraints features UniqueConstraint is preferred over unique_together.
From the Django documentation for unique_together:
Use UniqueConstraint with the constraints option instead.
UniqueConstraint provides more functionality than unique_together.
unique_together may be deprecated in the ...
How can I calculate the time between 2 Dates in typescript
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@KenLyon From MDN getTime documentation: You can use this method to help assign a date and time to another Date object. This method is functionally equivalent to the valueOf() method.
– PhoneixS
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How to get everything after a certain character?
... strpos() finds the offset of the underscore, then substr grabs everything from that index plus 1, onwards.
$data = "123_String";
$whatIWant = substr($data, strpos($data, "_") + 1);
echo $whatIWant;
If you also want to check if the underscore character (_) exists in your string before t...