Jump to content

Call an object method: Difference between revisions

Call an object method (view source)

Revision as of 11:39, 26 August 2023

145 bytes removed ,  10 months ago
→‎{{header|COBOL}}: switched to free format
imported>Acediast
(→‎{{header|COBOL}}: added params)
imported>Acediast
(→‎{{header|COBOL}}: switched to free format)
Line 238:
(. 1 (equals 2)) ; alternative style</syntaxhighlight>
=={{header|COBOL}}==
{{Works with|COBOL 2002}}
COBOLThere added object methods in 2002. It hasare two ways to invoke a method: the <code>INVOKE</code> statement and inline method invocation.
<syntaxhighlight lang="cobolcobolfree"> *> INVOKE statements.
INVOKE my-class "some-method" *> Factory object
USING BY REFERENCE some-parameter
RETURNING foo
INVOKE my-instance "another-method" *> Instance object▼
USING BY REFERENCE some-parameter▼
RETURNING foo▼
 
*> Inline method invocation.▼
▲ INVOKE my-instance "another-method" *> Instance object
MOVE my-class::"some-method"(some-parameter) TO foo *> Factory object▼
▲ USING BY REFERENCE some-parameter
MOVE my-instance::"another-method"(some-parameter) TO foo *> Instance object</syntaxhighlight>▼
▲ RETURNING foo
 
▲ *> Inline method invocation.
▲ MOVE my-class::"some-method"(some-parameter) TO foo
*> Factory object
 
▲ MOVE my-instance::"another-method"(some-parameter) TO foo
*> Instance object</syntaxhighlight>
 
To call factory methods of objects of an unknown type (such as when you may have a subclass of the class wanted), it is necessary to get a reference to the class's factory object by calling the <code>"FactoryObject"</code> method.
<syntaxhighlight lang="cobolcobolfree"> INVOKE some-instance "FactoryObject" RETURNING foo-factory
*> foo-factory can be treated like a normal object reference.
INVOKE foo-factory "someMethod"</syntaxhighlight>
 
=={{header|CoffeeScript}}==
Anonymous user
Retrieved from "https://rosettacode.org/wiki/Special:MobileDiff/351105"
Cookies help us deliver our services. By using our services, you agree to our use of cookies.
More information