Gen represents a PRNG.
It is the source of randomness from which QuickCheck will generate
values. An instance of
Gen is passed to every invocation of
Arbitrary::arbitrary, which permits callers to use lower level RNG
routines to generate values.
It is unspecified whether this is a secure RNG or not. Therefore, callers should assume it is insecure.
Gen with the given size configuration.
size parameter controls the size of random values generated.
For example, it specifies the maximum length of a randomly generated
vector, but is and should not be used to control the range of a
randomly generated number. (Unless that number is used to control the
size of a data structure.)
Returns the size configured with this generator.
Choose among the possible alternatives in the slice given. If the slice
is empty, then
None is returned. Otherwise, a non-
None value is
guaranteed to be returned.
impl RefUnwindSafe for Gen[src]
impl UnwindSafe for Gen[src]
type Error = Infallible
The type returned in the event of a conversion error.