Off-by-one error
<programming> An exceedingly common error induced in many ways, such as by starting at zero when you should have started at one or vice-versa, or by writing "< N" instead of "<= N" or vice-versa.
Often confounded with fencepost error, which is properly a particular subtype of it.
[Jargon File]
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| ODMG ODP ODSA ODT OEM | fencepost error obi-wan error walk off the end of | Office Office By Example Office Workstations Limited Official Production System off-line |
