Boolean
Related Docs:
object Boolean
| package scala
Compares two Boolean expressions and returns true if they evaluate to a different value.
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 ora is false and b is true.
Compares two Boolean expressions and returns true if both of them evaluate to true.
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.
This method evaluates both a and b, even if the result is already determined after evaluating a.
Compares two Boolean expressions and returns true if both of them evaluate to true.
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.
This method uses 'short-circuit' evaluation and
behaves as if it was declared as def &&(x: => Boolean): Boolean.
If a evaluates to false, false is returned without evaluating b.
Compares two Boolean expressions and returns true if they evaluate to the same value.
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 ora and b are false.
Compares two Boolean expressions and returns true if they evaluate to a different value.
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 ora is false and b is true.
Negates a Boolean expression.
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.
the negated expression
Compares two Boolean expressions and returns true if one or both of them evaluate to true.
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 orb is true ora and b are true.
This method evaluates both a and b, even if the result is already determined after evaluating a.
Compares two Boolean expressions and returns true if one or both of them evaluate to true.
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 orb is true ora and b are true.
This method uses 'short-circuit' evaluation and
behaves as if it was declared as def ||(x: => Boolean): Boolean.
If a evaluates to true, true is returned without evaluating b.
Boolean(equivalent to Java'sbooleanprimitive type) is a subtype of scala.AnyVal. Instances ofBooleanare 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.