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custom listview adapter getView method being called multiple times, and in no coherent order
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This is not an issue, there is absolutely no guarantee on the order in which getView() will be called nor how many times. In your particular case you are doing the worst thing possible with a ListView by giving it a height=wrap_content. This forces ListView to measure a few children out...
Sorting multiple keys with Unix sort
... @Arun POS is explained at the end of the man page. You just append the ordering options to the field number like this: sort -k 3,3nr -k 2,2
– andras
Aug 4 '17 at 15:03
1
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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...
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...
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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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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Removing duplicates in lists
...n approach to get a unique collection of items is to use a set. Sets are unordered collections of distinct objects. To create a set from any iterable, you can simply pass it to the built-in set() function. If you later need a real list again, you can similarly pass the set to the list() function.
T...
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...
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...