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What's wrong with overridable method calls in constructors?
...ide {
public static void main(String[] args) {
abstract class Base {
Base() {
overrideMe();
}
abstract void overrideMe();
}
class Child extends Base {
final int x;
Child(int x) {
...
Subclassing a Java Builder class
...ed the "Curiously recurring generic patterns"
Make the return type of the base class builder methods a generic argument.
public class NutritionFacts {
private final int calories;
public static class Builder<T extends Builder<T>> {
private int calories = 0;
p...
What is normalized UTF-8 all about?
...Conclusion
If in doubt, go with canonical normalization. Choose NFC or NFD based on the space/speed trade-off applicable, or based on what is required by something you are inter-operating with.
share
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How to show SQL queries run in the Rails console?
...r record.associated_things ) in the console, how can I see the actual database queries being run so I can gain more understanding of what is happening?
...
SQLAlchemy - Getting a list of tables
... the metadata yourself. Fortunately, the metadata is still present on the baseclass,
>>> Base = sqlalchemy.ext.declarative.declarative_base()
>>> Base.metadata
MetaData(None)
If you are trying to figure out what tables are present in your database, even among the ones you have...
targetContentOffsetForProposedContentOffset:withScrollingVelocity without subclassing UICollectionVi
...
Here's my implementation in Swift 5 for vertical cell-based paging:
override func targetContentOffset(forProposedContentOffset proposedContentOffset: CGPoint, withScrollingVelocity velocity: CGPoint) -> CGPoint {
guard let collectionView = self.collectionView else {
...
Read properties file outside JAR file
...ng (depending on the current state of the program) since it is just a text-based file. For example, your main.properties file may contain:
app.version=1.0.0.0
app.name=Hello
So, when you run your main program from its root/base folder, normally you will run it like this:
java -jar ./main.jar
o...
Get properties and values from unknown object
...e members to a file, but you shouldn't use this information to drive logic based on property sets.
Assuming you have control over the implementations of the types, you should derive from a common base class or implement a common interface and make the calls on those (you can use the as or is operat...
What does 'predicate' mean in the context of computer science? [duplicate]
...s, but in general we can use the term for any function that returns a bool based on evaluation of the truth of an assertion.
For sorting, might want have the member function
bool Fruit::ComesAfter(Fruit x) ...
as our predicate. If x comes after us, our sorting algorithm will swap the two fruits...
How to get a index value from foreach loop in jstl
...le which will hold the index of lop.
It can use for use to read for Zeor base index or 1 one base index.
${loop.count}` it will give 1 starting base index.
${loop.index} it will give 0 base index as normal Index of array start from 0.
For Example :
<c:forEach var="currentImage" items="$...