Ignore (Combined Fragment)   An ignore interaction operator (signified by the value of ignore) defines a combined fragment where the messages listed are to be ignored within the fragment. This means that these messages are insignificant in the context of the fragment and can be ignored.

Explanation

The ignore operator defines a list of messages to be ignored. These messages are not drawn in the fragment and if they occur in an interaction their effect, number and sequence is unimportant with respect to the fragment. The ignore operand can be used to define messages that have no importance in the context of the fragment and allows modelers to communicate this to their audience. The ignore operator is useful for defining test cases. In our everyday life we come across this notion for example: when a friend gives us instructions about getting to their house, they may say "ignore all side streets and just turn at the traffic lights".

Related Entries

Assert (Combined Fragment)  Graphically Similar A combined fragment with an operator of assert is related to a combined fragment with an operator of ignore because they are often used together, where an assertion is nested inside an ignore fragment.

Consider (Combined Fragment)  Graphically Similar A combined fragment with an operator of consider is related to a combined fragment with an operator of ignore because they reflect a reciprocal notion. Defining messages within a consider operator is affectively the same as saying that all other messages should be ignored.