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  1. What is the difference between the | and || or operators?

    Aug 29, 2008 · The & operator does "run these 3 functions, and if one of them returns false, execute the else block", while the | does "only run the else block if none return false" - can be …

  2. How do you use the ? : (conditional) operator in JavaScript?

    Jun 7, 2011 · What is the ?: (question mark and colon operator aka. conditional or "ternary") operator and how can I use it?

  3. What is the difference between & and && in Java? - Stack Overflow

    Apr 9, 2011 · I always thought that && operator in Java is used for verifying whether both its boolean operands are true, and the & operator is used to do Bit-wise operations …

  4. math - What does the ^ (XOR) operator do? - Stack Overflow

    Mar 6, 2021 · The XOR ( ^ ) is an logical operator that will return 1 when the bits are different and 0 elsewhere. A negative number is stored in binary as two's complement. In 2's complement, …

  5. What's the right way to overload operator== for a class hierarchy?

    In general I think the base class should define a operator== overload (internally or via friend class doesn't matter) which check typeid equality and calls an abstract virtual "equals" function …

  6. What does the ** maths operator do in Python? - Stack Overflow

    57 It is the power operator. From the Python 3 docs: The power operator has the same semantics as the built-in pow () function, when called with two arguments: it yields its left argument raised …

  7. Which equals operator (== vs ===) should be used in JavaScript ...

    Dec 11, 2008 · The strict equality operator (===) behaves identically to the abstract equality operator (==) except no type conversion is done, and the types must be the same to be …

  8. syntax - What is the := operator? - Stack Overflow

    Nov 13, 2018 · This is a new operator that is coming to Python 3.8 and actually had a role in BDFL Guido van Rossum's early retirement. Formally, the operator allows what's called an …

  9. What are bitwise shift (bit-shift) operators and how do they work?

    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 both logical and …

  10. Using :: (scope resolution operator) in C++ - Stack Overflow

    A qualified id-expression is an unqualified id-expression prepended by a scope resolution operator ::, and optionally, a sequence of enumeration, (since C++11)class or namespace names or …