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What is the performance cost of having a virtual method in a C++ class?
... call.
So, not really worth worrying about the cost unless the function is something like a trivial Get()/Set() accessor, in which anything other than inline is kind of wasteful. A 7ns overhead on a function that inlines to 0.5ns is severe; a 7ns overhead on a function that takes 500ms to execute...
Encoding URL query parameters in Java
How does one encode query parameters to go on a url in Java? I know, this seems like an obvious and already asked question.
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When should I use nil and NULL in Objective-C?
This is sample code:
16 Answers
16
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When and how should I use a ThreadLocal variable?
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One possible (and common) use is when you have some object that is not thread-safe, but you want to avoid synchronizing access to that object (I'm looking at you, SimpleDateFormat). Instead, give each thread its own instance of the object.
For example:
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Non-static variable cannot be referenced from a static context
I've written this test code:
12 Answers
12
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When to use CouchDB over MongoDB and vice versa
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Of C, A & P (Consistency, Availability & Partition tolerance) which 2 are more important to you? Quick reference, the Visual Guide To NoSQL Systems
MongodB : Consistency and Partition Tolerance
CouchDB : Availability and Partition Toler...
Entity Framework 4 vs NHibernate [closed]
...t Entity Framework first version on the web (also on stackoverflow) and it is clear that it was not a good choice when we already have better alternative like NHibernate. But I can't find a good comparison of Entity Framework 4 and NHibernate. We can say that today NHibernate is the leader among all...
Big-oh vs big-theta [duplicate]
...the occasional big-oh thrown in.
I know mathematically what the difference is between the two, but in English, in what situation would using big-oh when you mean big-theta be incorrect, or vice versa (an example algorithm would be appreciated)?
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jQuery load more data on scroll
... wondering how can i implement more data on scroll only if the div.loading is visible.
9 Answers
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Ternary operator is twice as slow as an if-else block?
I read everywhere that ternary operator is supposed to be faster than, or at least the same as, its equivalent if - else block.
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