Apple Newton Utilities Guía de usuario descargar pdf (Pagina 659)

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CHAPTER 18

Intelligent Assistant

About the Assistant 18-13

Resolving Template-Matching Conﬂicts 18

Template matching conﬂicts may arise when a template’s lexicon includes a word

that appears in the lexicon of another registered template. This section describes

the means by which the Assistant attempts to resolve such conﬂicts.

When a verb matches more than one action template, the Assistant must choose the

appropriate action template. For example, imagine that two games, Chess and

Checkers, are currently loaded in the Extras Drawer. If both games specify the

word

"play" in their action template’s lexicon, the Assistant cannot open the

correct application by simply matching this verb; the correct game to open must be

determined by some other means. For example, the code fragment below shows the

template for an action, play_act, that might conceivably be deﬁned by both games:

play_act := { value: "play action",

isa: 'dyna_user_action,

lexicon: [ "play" ]

}

The task templates for each of these games might look like the following example.

Note that both templates deﬁne

play_act as the primary action:

chessTemplate := {

value: "Chess Template",

isa: 'task_template,

primary_act: play_act,

preConditions: ['generic_action,'action, 'game],

signature: ['dyna_user_action, play_act,

chess_obj],

PostParse: func()

begin

print("we made it, chess!");

end,

score: nil},

checkersTemplate := { value: "Checkers Template",

isa: 'task_template,

primary_act: play_act,

preConditions: ['generic_action, 'action,

'game],

signature: ['dyna_user_action, play_act,

chkrs_obj],

PostParse: func()

begin

print("we made it, checkers!");

end,

score: nil},

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