ismethod

Tests whether an object has a method of a given name.

Category: Programming > Classes

Syntax

tf = ismethod(obj, 'name')

Description

Use it to decide at run time whether a call such as obj.name(...) is safe, or to write code that works with any object that offers a given operation. Inherited methods count. Properties and events do not; see isprop and events for those.

Input arguments

obj

An object.

'name'

Method name, as text. The match is case sensitive.

Output arguments

tf

Logical scalar.

Example

Methods of a Map

m = containers.Map();
ismethod(m, 'isKey')
ismethod(m, 'fly')
ismethod(m, 'Count')

ans = logical
   1
ans = logical
   0
ans = logical
   0

Notes

Pass an object. The form with the class name as text, ismethod('ClassName', 'name'), finds the methods of classes defined in files; for built-in classes such as containers.Map it does not, so pass an object there.

See also

isprop methods isobject events