select

<type> select(int conditional, <type>a, <type>b)

<type>[] select(int conditional, <type>a[], <type>b[])

Returns a if the conditional is true, and returns b if it is false.

The difference between select and an if statement is that select will evaluate both a and b, regardless of the value of the conditional. Judicious use of select can avoid comparisons, allowing larger sections of code to be converted to native code.