KRL provides support for conditional expressions with the following syntax:
<pred> => <consequent expr> | <alternate expr>
This is akin to the ?: ternary operator found in the C family of languages.
Conditional expressions can be nested to produce structures like the following:
<pred0> => <expr0> |
<pred1> => <expr1> |
<pred2> => <expr2> |
...
<exprn>
Because of the limitations of the parser, most predicates will need to be enclosed in parentheses:
z = (x > y) => y | x