Introduction of operator priority in VBS
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When multiple operations are performed in an expression, each part is evaluated in a predetermined order, which is called operator precedence. Parentheses change the order of precedence, forcing some part of the expression to take precedence. Operations in parentheses are always performed before those outside parentheses. However, in parentheses, the normal operator precedence is maintained.
When an expression has multiple operators, the arithmetic operator is processed first, then the comparison operator, and then the logical operator. All comparison operators have the same priority, that is, from left to right in the order in which they appear. Arithmetic and logical operators are processed according to the following precedence:
Arithmetic comparison logical exponential operation (^) equal (=) Not negative (-) And multiplication and division (*, /) less than () Xor congruence operation (Mod) less than or equal to (=) Imp string concatenation (&) Is&
When multiplication and division appear in the expression at the same time, each operator is processed in the order from left to right. Similarly, when addition and subtraction appear in the expression at the same time, each operator is processed in the order from left to right.
The string concatenation operator (&) is not an arithmetic operator, but in terms of precedence, it comes after all arithmetic operators and before all comparison operators. The Is operator is a comparison operator for object references. It does not compare objects or their values, but only determines whether two object references refer to the same object.
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