indexOf0 ( object : T ) : Integer[edit | edit source]

Returns the position of object in sequence self - 0 based.

Expression	Result
Sequence{'a', 'b'}->indexOf0('a')	0

The zero-based index of an object in the collection is possibly -1 if nonexistent.

See discussion and reason for introduction of IndexOf0 operator at page of IndexOf operator

See also at0

Example

Given a Class Car

Car.allInstances->asSequence().Name->indexOf0('Toyota')

This will return the position of 'Toyota' in the collection.