[−][src]Trait artichoke_core::coerce_to_numeric::CoerceToNumeric
Coerce Ruby values to native numerics (floats and integers).
Associated Types
type Value: Value
[src]
Concrete type of boxed Ruby value as inputs to coerce functions.
type Float
[src]
Concrete float type to coerce values into, e.g. f64
.
type Error
[src]
Concrete error type for errors encountered when coercing values.
Required methods
fn coerce_to_float(
&mut self,
value: Self::Value
) -> Result<Self::Float, Self::Error>
[src]
&mut self,
value: Self::Value
) -> Result<Self::Float, Self::Error>
Coerce the given Ruby value to a Float
.
This coercion mechanism is used by Ruby to handle mixed-type numeric operations: it is intended to find a compatible common type between the two operands of the operator.
See Numeric#coerce
.
Errors
If a Ruby nil
is given, an error is returned.
If the given value does not subclass Numeric
, an error is returned.
If the Numeric
class is not defined, an error is returned.
If the underlying interpreter returns an error when calling #to_f
or
Numeric#coerce
, the error is returned.