Conditional Expression

The unique conditional expression operator is ?:. The expression syntax, semantics, associativity and precedence are quite identical to the corresponding C and C++ expressions. The first operand must be an boolean and the two others may be of any type. Contrary to C and C++, the two last operands does not need to be of the same type.

General Information
Operator	?:
Type	ternary
Syntaxe	expr ? expr : expr
Operand Types	first operand is boolean, others are any type
Result Type	type of the evaluated operand
Functions	conditional evaluation: evaluates and returns the second operand if the first operand is true; otherwise evaluates and returns the second operand

Expression Examples
expression	result
true ? "hello" : "world"	"hello"
true ? 2.3 : "world"	2.3
1+1 == 2 ? (a := 3.1415926535) : nil	3.1515926535
1 ? 3 : nil	raises an error: boolean expected, got integer.