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Difference between this and self in self-type annotations?
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All three forms are valid, and have the effect that B is assumed as the type of this in class A.
The first two variants
trait A { self: B => ... }
trait A { foo: B => ... }
introduce self (respectively, foo) as an alias for this in trait A. This is useful for access...
How to import other Python files?
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importlib was added to Python 3 to programmatically import a module.
It is just a wrapper around __import__, see the docs.
import importlib
moduleName = input('Enter module name:')
importlib.import_module(moduleName)
Note: the ....
Disable all table constraints in Oracle
How can I disable all table constrains in Oracle with a single command?
This can be either for a single table, a list of tables, or for all tables.
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Scala: Nil vs List()
In Scala, is there any difference at all between Nil and List() ?
3 Answers
3
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What is the most efficient way to concatenate N arrays?
What is the most efficient way to concatenate N arrays of objects in JavaScript?
20 Answers
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Real life example, when to use OUTER / CROSS APPLY in SQL
I have been looking at CROSS / OUTER APPLY with a colleague and we're struggling to find real life examples of where to use them.
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Python: how to print range a-z?
1. Print a-n: a b c d e f g h i j k l m n
17 Answers
17
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Difference between modes a, a+, w, w+, and r+ in built-in open function?
In the python built-in open function, what is the exact difference between the modes w , a , w+ , a+ , and r+ ?
6 An...
Sort a Map by values
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Here's a generic-friendly version:
public class MapUtil {
public static <K, V extends Comparable<? super V>> Map<K, V> sortByValue(Map<K, V> map) {
List<Entry<K, V>> list = new ArrayList<>(map.entrySet());
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Starting the week on Monday with isoWeekday()
I'm creating a calendar where I print out weeks in a tabular format. One requirement is that I be able to start the weeks either on Monday or Sunday, as per some user option. I'm having a hard time using moment's isoWeekday method.
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