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What does .SD stand for in data.table in R
... I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
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Calling remove in foreach loop in Java [duplicate]
In Java, is it legal to call remove on a collection when iterating through the collection using a foreach loop? For instance:
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What is the purpose of the HTML “no-js” class?
...he HTML5 Boilerplate , in various frameworks and in plain php sites there is the no-js class added onto the <HTML> tag.
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How to optimize for-comprehensions and loops in Scala?
So Scala is supposed to be as fast as Java. I'm revisiting some Project Euler problems in Scala that I originally tackled in Java. Specifically Problem 5: "What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?"
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List of Big-O for PHP functions
...er these two possible implementations of a function that finds if a number is prime using a cached array of primes.
4 Answe...
Java8 Lambdas vs Anonymous classes
...brand new lambda expressions looks to be really cool, I was wondering if this means the demise of the Anonymous classes that we were so used to.
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What are the differences between type() and isinstance()?
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To summarize the contents of other (already good!) answers, isinstance caters for inheritance (an instance of a derived class is an instance of a base class, too), while checking for equality of type does not (it demands identity of types and rejects instances of subtypes, AKA subclas...
Is it better to use std::memcpy() or std::copy() in terms to performance?
Is it better to use memcpy as shown below or is it better to use std::copy() in terms to performance? Why?
8 Answers
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Is XSLT worth it? [closed]
...ar expressions can be a nice way to query strings.
Functional language.
Disadvantages of XSLT:
Can be obscenely verbose - you don't have to quote literal XML, which effectively means you do have to quote code. And not in a pretty way. But then again, it's not much worse than your typical SSI.
Do...
Aspect Oriented Programming vs. Object-Oriented Programming
...t traditional OOP doesn't solve completely or directly, I pause and think, is it real?
7 Answers
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