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Simulating group_concat MySQL function in Microsoft SQL Server 2005?
... WHERE empName = a.empName
ORDER BY empName FOR xml path('')), ' ', REQUIRED SEPERATOR)
FROM project_members a
WHERE empName IS NOT NULL
GROUP BY empName
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Asynchronous vs synchronous execution, what does it really mean? [closed]
...nd you.
ASYNCHRONOUS
You are in a restaurant with many other people. You order your food. Other people can also order their food, they don't have to wait for your food to be cooked and served to you before they can order.
In the kitchen restaurant workers are continuously cooking, serving, and tak...
How do I get the key at a specific index from a Dictionary in Swift?
...Dictionary.keys)[0] // or .first
Remember, dictionaries are inherently unordered, so don't expect the key at a given index to always be the same.
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Exception thrown in NSOrderedSet generated accessors
... implementation of the add object setter to append correctly to a NSMutableOrderedSet.
- (void)addSubitemsObject:(SubItem *)value {
NSMutableOrderedSet* tempSet = [NSMutableOrderedSet orderedSetWithOrderedSet:self.subitems];
[tempSet addObject:value];
self.subitems = tempSet;
}
Reassi...
RESTful way to create multiple items in one request
I am working on a small client server program to collect orders. I want to do this in a "REST(ful) way".
7 Answers
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What does 'super' do in Python?
...om the parent class that follows Child in the instance's Method Resolution Order (MRO).
If the instance is a subclass of Child, there may be a different parent that comes next in the MRO.
Explained simply
When you write a class, you want other classes to be able to use it. super() makes it easi...
Getting an object from an NSSet
... to get a member (not random), or convert it to an array (in no particular order) with allObjects.
A set is appropriate when you don't want duplicates, don't care about order, and want fast membership testing.
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Change priorityQueue to max priorityqueue
...ue<Integer> queue = new PriorityQueue<>(10, Collections.reverseOrder());
queue.offer(1);
queue.offer(2);
queue.offer(3);
//...
Integer val = null;
while( (val = queue.poll()) != null) {
System.out.println(val);
}
The Collections.reverseOrder() provides a Comparator that would sort...
What is Domain Driven Design (DDD)? [closed]
...objects that don't make sense unless they have an owner. For example, an 'Order Line' object doesn't make sense without an 'Order' to belong to, so we say that the Order is the aggregate root, and Order Line objects can only be manipulated via methods in the Order object
DDD also recommends sever...
How to ignore HTML element from tabindex?
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If these are elements naturally in the tab order like buttons and anchors, removing them from the tab order with tabindex=-1 is kind of an accessibility smell. If they're providing duplicate functionality removing them from the tab order is ok, and consider adding ari...