A conditional expression.

Conditional expressions resemble control structures, but are part of the expression syntax and evaluate to values.

Examples (multi-line):

if (is Box<Type> that)
    then this.content == that.content
    else false

switch (first.age <=> second.age)
case (smaller) "younger"
case (equal) "of the same age as"
case (larger) "older than"
Inherited Attributes
Attributes inherited from: Expression
Attributes inherited from: Node
Attributes inherited from: Object
hash, string
Inherited Methods
Methods inherited from: Node
Methods inherited from: Object