What does copying an object mean? What are the copy constructor and the copy assignment operator? When do I need to declare them myself? How can I
Continue ReadingC++: Why is one loop so much slower than two loops?
Suppose a1, b1, c1, and d1 point to heap memory and my numerical code has the following core loop. const int n=100000 for(int j=0;j<n;j++){
Continue ReadingWhy is processing a sorted array faster than an unsorted array?
Here is a piece of C++ code that seems very peculiar. For some strange reason, sorting the data miraculously makes the code almost six times faster.
Continue ReadingWhat is “:-!!” in C code?
I bumped into this strange macro code in /usr/include/linux/kernel.h: /* Force a compilation error if condition is true, but also produce a resul
Continue ReadingC++: What is the name of the “–>” operator?
After reading Hidden Features and Dark Corners of C++/STL on comp.lang.c++.moderated, I was completely surprised that it compiled and worked in both V
Continue ReadingC++: Determine if a String Is Numeric
Create a boolean function which takes in a string and tells whether it is a numeric string (floating point and negative numbers included) in the synta
Continue ReadingBrand Loyalty Is Dead
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Continue ReadingVirtual Reality Is Now a Marketing Reality
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Continue ReadingThe UK Pension Map: How Much Is Being Saved?
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Continue ReadingWho Is Second-In-Command at 25 Iconic American Companies?
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