Class DoubleValue (version 0.18)

Description: Encapsulate a floating point value

This class is provided as a return value of InputDialog::get_double. By using an object rather than a pure value, an object with has_value? = false can be returned indicating that the "Cancel" button was pressed.

Class overview

Index

Method Overview

[const] bool has_value?	True, if a value is present
[const] double to_f	Get the actual value (a synonym for value)
[const] double value	Get the actual value
assign( DoubleValue other )	Assign the contents of another object to self
[const] DoubleValue dup	Creates a copy of self.
destroy	Explicitly destroy the object
[const] bool destroyed	Tell, if the object was destroyed

assign( DoubleValue other )

Description: Assign the contents of another object to self

This method assigns the contents of another object to self. This is a deep copy that does not only copy the reference but the actual content.

destroy

Description: Explicitly destroy the object

Explicitly destroy the object on C++ side if it was owned by the Ruby interpreter. Subsequent access to this object will throw an exception. If the object is not owned by Ruby, this method will do nothing.

[const] bool destroyed

Description: Tell, if the object was destroyed

This method returns true, if the object was destroyed, either explicitly or by the C++ side. The latter may happen, if the object is owned by a C++ object which got destroyed itself.

[const] DoubleValue dup

Description: Creates a copy of self.

[const] bool has_value?

Description: True, if a value is present

[const] double to_f

Description: Get the actual value (a synonym for value)

[const] double value

Description: Get the actual value