Difference between revisions of "IsDefined Command"
From GeoGebra Manual
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; IsDefined[ <Object> ]: Returns ''true'' or ''false'' depending on whether the object is defined or not. | ; IsDefined[ <Object> ]: Returns ''true'' or ''false'' depending on whether the object is defined or not. | ||
| + | :{{Example|1=<code>IsDefined[Circle[(1,1), -2]]</code> returns ''false''.}} | ||
Revision as of 14:08, 14 June 2013
- IsDefined[ <Object> ]
- Returns true or false depending on whether the object is defined or not.
- Example:
IsDefined[Circle[(1,1), -2]]returns false.
