A || !a

Definition

The logical OR operator (||) can also be used in combination with the logical NOT operator (!). It checks whether at least one of the original value or its negation is true.

Related terms

Logical OR operator (||): Combines two boolean values and returns true if at least one of them is true.

Logical NOT operator (!): Reverses the boolean value. If it was originally false, applying NOT makes it true; if it was originally true, applying NOT makes it false.

Boolean value: A data type that can have one of two possible values - true or false.