Class Boolean.Boolean
Boolean (equivalent to Java's boolean primitive type) is a subtype of scala.AnyVal. Instances of Boolean are not represented by an object in the underlying runtime system.
There is an implicit conversion from scala.Boolean => scala.runtime.RichBoolean which provides useful non-primitive operations.
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Abstract methods
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Compares two Boolean expressions and returns true if they evaluate to a different value.
a != b returns true if and only if - a is true and b is false or - a is false and b is true.
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Compares two Boolean expressions and returns true if both of them evaluate to true.
a & b returns true if and only if - a and b are true.
| Note | This method evaluates both |
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Compares two Boolean expressions and returns true if both of them evaluate to true.
a && b returns true if and only if - a and b are true.
| Note | This method uses 'short-circuit' evaluation and behaves as if it was declared as |
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Compares two Boolean expressions and returns true if they evaluate to the same value.
a == b returns true if and only if - a and b are true or - a and b are false.
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Compares two Boolean expressions and returns true if they evaluate to a different value.
a ^ b returns true if and only if - a is true and b is false or - a is false and b is true.
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Negates a Boolean expression.
- !a results in false if and only if a evaluates to true and - !a results in true if and only if a evaluates to false.
| Returns | the negated expression |
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Compares two Boolean expressions and returns true if one or both of them evaluate to true.
a | b returns true if and only if - a is true or - b is true or - a and b are true.
| Note | This method evaluates both |
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Compares two Boolean expressions and returns true if one or both of them evaluate to true.
a || b returns true if and only if - a is true or - b is true or - a and b are true.
| Note | This method uses 'short-circuit' evaluation and behaves as if it was declared as |
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© 2002-2022 EPFL, with contributions from Lightbend.
Licensed under the Apache License, Version 2.0.
https://scala-lang.org/api/3.2.0/scala/Boolean.html