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Scala type programming resources
According to this question , Scala's type system is Turing complete . What resources are available that enable a newcomer to take advantage of the power of type-level programming?
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How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
...ayout does. The way autolayout works is that in layoutSubviews the runtime comes dashing through all the constraints and setting the frames of all the views accordingly.
In other words, the constraints are not magic; they are just a to-do list. layoutSubviews is where the to-do list gets done. And ...
INNER JOIN vs LEFT JOIN performance in SQL Server
I've created SQL command that uses INNER JOIN on 9 tables, anyway this command takes a very long time (more than five minutes). So my folk suggested me to change INNER JOIN to LEFT JOIN because the performance of LEFT JOIN is better, despite what I know. After I changed it, the speed of query got si...
How to highlight text using javascript
... for multiple occurrences (not relevant for the question, but was asked in comments) you simply add global on the replace regular expression.
"the fox jumped over the other fox".replace(/fox/g,"<span>fox</span>");
Hope this helps to the intrigued commenters.
Replacing the HTML to th...
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar
...iew
if(filterPredicate)
{
filterPredicate = [NSCompoundPredicate andPredicateWithSubpredicates:[NSArray arrayWithObjects:filterPredicate, [NSCompoundPredicate orPredicateWithSubpredicates:predicateArray], nil]];
}
else
{
filterPredicate...
Maintain the aspect ratio of a div with CSS
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What is the real overhead of try/catch in C#?
...isn't a good way of controlling process flow, but where does this overhead come from and what is it's actual impact?
12 Ans...
How to implement a queue using two stacks?
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The worst-case time complexity is still O(n). I persist in saying this because I hope no students out there (this sounds like a homework/educational question) think this is an acceptable way to implement a queue.
– Tyler
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Passing Data between View Controllers
...oller:viewControllerB animated:YES];
References
Using Delegation to Communicate With Other View Controllers in the View Controller Programming Guide
Delegate Pattern
NSNotification center
It's another way to pass data.
// add observer in controller(s) where you want to receive data
[[NSNo...
What's the fastest way to merge/join data.frames in R?
...low we illustrate these points.
Its worthwhile to notice that the precise computation can make a huge difference on which package is fastest. For example, we do a merge and an aggregate below. We see that the results are nearly reversed for the two. In the first example from fastest to slowest w...