or P if and only if Q means (P implies Q) and (Q implies P) quantifier

Jun 5, 2022 ... OR "||" finds the first truthy value · Evaluates operands from left to right. · For each operand, converts it to boolean. If the result is true ... PHP's boolean operators always return a boolean value as opposed to other languages that return the value of the last evaluated expression. Prefer using a logical operator over a ternary. This rule is enabled in the ✓ recommended config. This rule is manually fixable by editor suggestions. Logical Operators: AND, OR, and NOT · The AND operator returns false if the other operand returns false; otherwise, it returns NULL. · The OR operator returns ... For example, the addition operator ( + ) adds two numbers, as in let i = 1 + 2 , and the logical AND operator ( && ) combines two Boolean values, as in if ... Answered By: APUS Librarians. Last Updated: Sep 22, 2022 Views: 308737. Boolean operators are the words "AND", "OR" and "NOT". When used in library ... The operators above perform logical comparisons, and operator ! performs logical negation. All operators evaluate to 1 or 0, meaning true or false. Remarks ... Feb 29, 2012 ... In the Find or Replace dialog, click More >>, then tick the check box "Use wildcards". In the Find what box, enter Text[AB] Click Find Next. Mar 19, 2015 ... You can now search issues by label using logical OR ... Simply use a comma to separate the labels. For example ... label:"good first issue",bug. Binary operator precedence. Binary operators. Prometheus's query language supports basic logical and arithmetic operators. For operations between two instant ...