Struct quickcheck::Gen
source · pub struct Gen { /* private fields */ }
Expand description
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.
Implementations§
source§impl Gen
impl Gen
sourcepub fn new(size: usize) -> Gen
pub fn new(size: usize) -> Gen
Returns a Gen
with the given size configuration.
The 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.)
Auto Trait Implementations§
impl Freeze for Gen
impl RefUnwindSafe for Gen
impl Send for Gen
impl Sync for Gen
impl Unpin for Gen
impl UnwindSafe for Gen
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more