iteration expression
A specification within an interaction of the range of number of iterations of a loop.
Semantics
On a loop within an interaction, the range of iterations can be specified by a minimum and maximum count.
Notation
Sequence diagram. In a sequence diagram, the bounds on the number of iterations of a loop are included in parentheses as part of the tag after the keyword loop:
| loop | Minimum = 0, unlimited maximum |
| loop (repeat) | Minimum = maximum = repeat |
| loop (minimum, maximum) | Explicit minimum and maximum bounds |
In addition to the bounds, a Boolean expression can be included as a guard on a lifeline. The loop will continue to iterate if the expression is true, but it will iterate at least the minimum count and no more than the maximum ...
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