GOTO still considered harmful? [closed]
GOTO still considered harmful? [closed]
language-agnostic
What are bitwise shift (bit-shift) operators and how do they work?
The bit shifting operators do exactly what their name implies. They shift bits. Here’s a brief (or not-so-brief) introduction to the different shift operators. The Operators >> is the arithmetic (or signed) right shift operator. >>> is the logical (or unsigned) right shift operator. << is the left shift operator, and meets the needs of … Read more
What is a magic number, and why is it bad? [closed]
A magic number is a direct usage of a number in the code. For example, if you have (in Java): public class Foo { public void setPassword(String password) { // don’t do this if (password.length() > 7) { throw new InvalidArgumentException(“password”); } } } This should be refactored to: public class Foo { public static … Read more
What is the difference between a deep copy and a shallow copy?
What is the difference between a deep copy and a shallow copy?
What’s the difference between passing by reference vs. passing by value?
First and foremost, the “pass by value vs. pass by reference” distinction as defined in the CS theory is now obsolete because the technique originally defined as “pass by reference” has since fallen out of favor and is seldom used now.1 Newer languages2 tend to use a different (but similar) pair of techniques to achieve … Read more