Trait artichoke_core::constant::DefineConstant
source · [−]pub trait DefineConstant {
type Value: Value;
type Error;
fn define_global_constant(
&mut self,
constant: &str,
value: Self::Value
) -> Result<(), Self::Error>;
fn define_class_constant<T>(
&mut self,
constant: &str,
value: Self::Value
) -> Result<(), Self::Error>
where
T: 'static;
fn define_module_constant<T>(
&mut self,
constant: &str,
value: Self::Value
) -> Result<(), Self::Error>
where
T: 'static;
}
Expand description
Define constants on an interpreter.
Constants can be an arbitrary Ruby value. Constants can be defined globally, on a class, or on a module.
Required Associated Types
Required Methods
Define a global constant.
Errors
If the given constant name is not valid, an error is returned.
If the interpreter cannot define the constant, an error is returned.
Define a class constant.
The class is specified by the type parameter T
.
Errors
If the class named by type T
is not defined, an error is returned.
If the given constant name is not valid, an error is returned.
If the interpreter cannot define the constant, an error is returned.
Define a module constant.
The class is specified by the type parameter T
.
Errors
If the module named by type T
is not defined, an error is returned.
If the given constant name is not valid, an error is returned.
If the interpreter cannot define the constant, an error is returned.