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NLI: Function: set1 & set+ Background: NLI, Expressions, Functions Related: Examples Description: The set1 function creates a sequence. set1's last input must be a string. Before making the sequence, the last input is replaced the first attribute instance named by string. The set+ is similar to set1 except it creates the attribute instance, if none exists. General Format: (set1 entity attribute 'nameOfAttributeInstance) (set+ entity attribute 'nameOfAttributeInstance) Examples: (set1 john gender 'male)) (set+ john gender 'male)) Notes: (set1 john gender 'male) is approximately equivalent to (set john gender (and (get gender instance *) (get * name 'male))). |