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What does <> (angle brackets) mean in MS-SQL Server?
<> operator means not equal to in MS SQL. It compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left operand is not equal to the right operand; otherwise, the result is FALSE. If either or both operands are NULL, see the topic SET ANSI_NULLS (Transact-SQL). See here : Not Equal To

What is the purpose of the unsigned right shift operator ">>>" in Java?
@pochopsp: The unsigned-right-shift operator will yield correct results throughout the entire range; since the only extra cost compared with the signed right shift is one extra byte of source code. When the right-hand operator is a non-zero constant, both operators guarantee that the result will fall in a certain range.

c - What does tilde (~) operator do? - Stack Overflow
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.

What does the !! (double exclamation mark) operator do in JavaScript ...
I suspect this is a leftover from C++ where people override the ! operator, but not the bool operator. So to get a negative (or positive) answer in that case, you would first need to use the ! operator to get a Boolean, but if you wanted to check the positive case you would use !!.

What is a Question Mark "?" and Colon ":" Operator Used for?
Ternary operator refers to any operator with three parameters, thus this is a ternary operator but not the ternary operator. Major languages (C#, Java, PHP) consider it a conditional operator, and call it the?: operator. Occasionally (JavaScript) it is called the conditional operator. –

Pipe (|) operator in Java - Stack Overflow
| is the "bitwise or" operator. in a|b, if nth bit of a and/or b is 1, the nth bit of the result will be 1. 3 is 11 in binary. 4 is 100 in binary. 0 1 1 or or or 1 0 0 = = = 1 1 1 And 111 happens to be the binary representation of 7.

syntax - What is the := operator? - Stack Overflow
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 "assignment expression". Informally, the operator is referred to as the "walrus operator". It allows assignment while also evaluating an expression. So this:

What does the `%` (percent) operator mean? - Stack Overflow
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).

What does the |= operator do in Java? - Stack Overflow
|= is a bitwise-OR-assignment operator. It takes the current value of the LHS, bitwise-ors the RHS, and assigns the value back to the LHS (in a similar fashion to += does with addition). For example:

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

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