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The ~ operator in C++ (and other C-like languages like C and Java) performs a bitwise NOT operation - all the 1 bits in the operand are set to 0 and all the 0 bits in the operand are set to 1. In other words, it creates the complement of the original number. For example:
Objects are true, but the undefined value and null are both false. The double negation operator !! calculates the truth value of a value. It's actually two operators, where !!x means !(!x), and behaves as follows: If x is a false value, !x is true, and !!x is false. If x is a true value, !x is false, and !!x is true.
Apr 9, 2011 · While && operator will stop evaluating the second argument if the first argument's result is false. One more difference between these two is, Bitwise & operator is applicable for boolean as well as integral types. While short-circuit && operator is applicable only for the boolean type. We can write.
Dec 11, 2008 · The === operator is called a strict comparison operator, it does differ from the == operator. Lets take 2 vars a and b. For "a == b" to evaluate to true a and b need to be the same value. In the case of "a === b" a and b must be the same value and also the same type for it to evaluate to true. Take the following example
Unsigned Right Shift(>>>): This operator also shifts bits to the right. The difference between signed and unsigned is the latter fills the leading bits with 1 if the number is negative and the former fills zero in either case. Now the question arises why we need unsigned right operation if we get the desired output by signed right shift operator.
Jun 7, 2011 · Just to clarify the name: ternary is the type of operator (i.e. it has 3 parts). The name of that specific ternary operator is the conditional operator. There just happens to only be one ternary operator in JS so the terms get misused. –
Apr 22, 2022 · Pointer-to-member access operators: .* and ->*. The pointer-to-member access operators, .* and ->*, are for dereferencing a pointer to member in combination with an object and a pointer to object, respectively. This description applies to both pointers to data members and pointers to member functions.
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, The leftmost bit position is reserved for the sign of the value (positive or negative) and doesn't contribute towards the value of number.
Note that the result of the % operator is equal to x – (x / y) * y and that if y is zero, a DivideByZeroException is thrown. If x and y are non-integer values x % y is computed as x – n * y, where n is the largest possible integer that is less than or equal to x / y (more details in the C# 4.0 Specification in section 7.8.3 Remainder operator).
The OR operator || uses the right value if left is falsy, while the nullish coalescing operator ?? uses the right value if left is null or undefined. These operators are often used to provide a default value if the first one is missing. But the OR operator || can be problematic if your left value might contain "" or 0 or false (because these ...
