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Add a variable to a class instance at runtime: Difference between revisions

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Add a variable to a class instance at runtime (view source)

Revision as of 15:35, 7 January 2019

31 bytes removed ,  5 years ago
m
→‎{{header|Elena}}
m (Moved jq entry into correct alphabetical order.)
Line 327:
ELENA does not support adding a field at run-time but it can be simulated with the help of a mix-in.
 
ELENA 3.4.x:
<lang elena>import extensions.;
 
class Extender :: BaseExtender
{
prop object prop foo :: theField.;
constructor new : anObject(object)
[{
theObject := anObject.object
]}
}
 
public program()
{
[
var anObjectobject := 234.;
// extending an object with a field
anObjectobject := Extender new Extender(anObjectobject).;
 
anObject object.foo := "bar".;
 
console .printLine(anObjectobject,".foo=",anObject object.foo).;
 
console .readChar()
]}</lang>
{{out}}
<pre>
Anonymous user
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