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Using arrays or std::vectors in C++, what's the performance gap?
...des a size function and iterators to iterate over it.
Now the std::vector vs. native C++ arrays (taken from the internet):
// Comparison of assembly code generated for basic indexing, dereferencing,
// and increment operations on vectors and arrays/pointers.
// Assembly code was generated by gcc...
Why define an anonymous function and pass it jQuery as the argument?
... when the DOM is ready to be manipulated by your JavaScript code.
Modules vs DOMReady In Backbone Code
It's bad form to define your Backbone code inside of jQuery's DOMReady function, and potentially damaging to your application performance. This function does not get called until the DOM has load...
Python: Select subset from list based on index set
...does he mention NumPy -- there is no need to express your opinion on NumPy vs Matlab. Python lists are not the same thing as NumPy arrays, even if they both roughly correspond to vectors. (Python lists are like Matlab cell arrays -- each element can have a different data type. NumPy arrays are more ...
Are Java static calls more or less expensive than non-static calls?
...
First: you shouldn't be making the choice of static vs non-static on the basis of performance.
Second: in practice, it won't make any difference. Hotspot may choose to optimize in ways that make static calls faster for one method, non-static calls faster for another.
Third: ...
what is the difference between OLE DB and ODBC data sources?
...
This entry jamesmccaffrey.wordpress.com/2006/05/02/odbc-vs-ole-db says that for SQL DS, OLEDB goes thru ODBC.
– Hernán
Mar 27 '13 at 18:18
1
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Why are quaternions used for rotations?
...a 3x3 rotation matrix, the quaternion has the advantage in size (4 scalars vs. 9) and speed (quaternion multiplication is much faster than 3x3 matrix multiplication).
Note that all of these representations of rotations are used in practice. Euler angles use the least memory; matrices use more memor...
What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
...
on vs2015 separating comma is essential in the template version:
template <typename T, typename ... U>
struct X<T(U...,...)> {};// this line is the important one
an example instantiation is:
X<int(...
Java GUI frameworks. What to choose? Swing, SWT, AWT, SwingX, JGoodies, JavaFX, Apache Pivot? [close
...en it was almost mature.
You might want to see the discussion about Swing vs. Qt here.
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edited May 23 '17 at 11:33
Community...
What do people find difficult about C pointers? [closed]
...n students' understanding to be the most common source of problems:
Heap vs Stack storage. It is simply stunning how many people do not understand this, even in a general sense.
Stack frames. Just the general concept of a dedicated section of the stack for local variables, along with the reason it...
What is object slicing?
... would just like to add an execution example when passing objects by value vs by reference:
#include <iostream>
using namespace std;
// Base class
class A {
public:
A() {}
A(const A& a) {
cout << "'A' copy constructor" << endl;
}
virtual void run() co...