interface DeriveToS

deriving :: DeriveToS

Implementation of to_s for Derivable objects.

The implementation uses to_s for each value of attributes_to_map.

class A
   auto_derive
   super DeriveToS
   var an_int: Int
   var a_string: String
end

var a = new A(5, "five")
assert a.to_s == "an_int:5; a_string:five"

Warning: the method may go in an infinite recursion if there is a circuit in the implementation of to_s.

Introduced properties

Redefined properties

redef type SELF: DeriveToS

deriving $ DeriveToS :: SELF

Type of this instance, automatically specialized in every class
redef fun to_s: String

deriving $ DeriveToS :: to_s

User readable representation of self.

All properties

fun !=(other: nullable Object): Bool

core :: Object :: !=

Have self and other different values?
fun ==(other: nullable Object): Bool

core :: Object :: ==

Have self and other the same value?
type CLASS: Class[SELF]

core :: Object :: CLASS

The type of the class of self.
type SELF: Object

core :: Object :: SELF

Type of this instance, automatically specialized in every class
protected fun class_factory(name: String): CLASS

core :: Object :: class_factory

Implementation used by get_class to create the specific class.
fun class_name: String

core :: Object :: class_name

The class name of the object.
fun derive_to_map: Map[String, nullable Object]

deriving :: Derivable :: derive_to_map

Returns a map that loosely represents the object self.
fun get_class: CLASS

core :: Object :: get_class

The meta-object representing the dynamic type of self.
fun hash: Int

core :: Object :: hash

The hash code of the object.
init init

core :: Object :: init

fun inspect: String

core :: Object :: inspect

Developer readable representation of self.
protected fun inspect_head: String

core :: Object :: inspect_head

Return "CLASSNAME:#OBJECTID".
intern fun is_same_instance(other: nullable Object): Bool

core :: Object :: is_same_instance

Return true if self and other are the same instance (i.e. same identity).
fun is_same_serialized(other: nullable Object): Bool

core :: Object :: is_same_serialized

Is self the same as other in a serialization context?
intern fun is_same_type(other: Object): Bool

core :: Object :: is_same_type

Return true if self and other have the same dynamic type.
intern fun object_id: Int

core :: Object :: object_id

An internal hash code for the object based on its identity.
fun output

core :: Object :: output

Display self on stdout (debug only).
intern fun output_class_name

core :: Object :: output_class_name

Display class name on stdout (debug only).
fun serialization_hash: Int

core :: Object :: serialization_hash

Hash value use for serialization
intern fun sys: Sys

core :: Object :: sys

Return the global sys object, the only instance of the Sys class.
abstract fun to_jvalue(env: JniEnv): JValue

core :: Object :: to_jvalue

fun to_s: String

core :: Object :: to_s

User readable representation of self.
package_diagram deriving::DeriveToS DeriveToS deriving::Derivable Derivable deriving::DeriveToS->deriving::Derivable core::Object Object deriving::Derivable->core::Object ...core::Object ... ...core::Object->core::Object

Ancestors

interface Object

core :: Object

The root of the class hierarchy.

Parents

interface Derivable

deriving :: Derivable

Interface of objects that expose some kind of internal representation in a very unreliable way.

Class definitions

deriving $ DeriveToS 
# Implementation of `to_s` for `Derivable` objects.
#
# The implementation uses `to_s` for each value of `attributes_to_map`.
#
# ~~~
# class A
#    auto_derive
#    super DeriveToS
#    var an_int: Int
#    var a_string: String
# end
#
# var a = new A(5, "five")
# assert a.to_s == "an_int:5; a_string:five"
# ~~~
#
# Warning: the method may go in an infinite recursion if there is a circuit in
# the implementation of `to_s`.
interface DeriveToS
	super Derivable
	redef fun to_s do return derive_to_map.join("; ", ":")
end
lib/deriving/deriving.nit:63,1--84,3
Nit standard library. Version .