Delphi – Equivalent to C#’s ternary operator? [duplicate]

Of course you can use

IfThen(SomeBooleanExpression, IfTrueReturnValue, IfFalseReturnValue)

where the return values are numeric (uses Math) or string (uses StrUtils). But notice that this will evaluate both arguments in all cases — there is no lazy evaluation, so it is not as efficient as the ?: operator in C#, where only the right operand is evaluated.

So you cannot do

y := IfThen(x <> 0, 1/x, 0)

The best thing is to stick with an ordinary

if x <> 0 then y := 1/x else y := 0;