Apple Newton Utilities Guide de l'utilisateur télécharger pdf (Page 403)

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CHAPTER 10

Recognition: Advanced Topics

Using Advanced Topics in Recognition 10-27

This approach works well for small dictionaries; for most large dictionaries,

however, it is far more efﬁcient to populate the dictionary from saved soup data.

You should store custom dictionary data in a soup so that it is safely stored and

persistent across soft resets.

IMPORTANT

Do not use the AddWordToDictionary global function to add

words to the review dictionary; instead, use the appropriate review

dictionary methods.

▲

Removing Words From RAM-Based Dictionaries 10

You can use the DeleteWordFromDictionary function to remove a speciﬁed

word from a speciﬁed RAM-based dictionary. Note that this function does not

make permanent changes to soups. After calling this function you must write your

changes to the appropriate soup.

IMPORTANT

Do not use the DeleteWordFromDictionary function to

remove words from the review dictionary; instead, use the

appropriate review dictionary methods.

▲

Saving Dictionary Data to a Soup 10

Once you have added all of your dictionary entries, your RAM-based custom

dictionary is ready for use. However, it would be inefﬁcient to build it from scratch

each time you need it, especially if it is large. Instead, you can store a binary

representation of the dictionary data in a soup and use this soup data to restore the

custom dictionary.

The

NewDictionary function returns an identiﬁer used to reference the

dictionary; in the previous example, this identiﬁer was stored in the

mySpecialDictionary slot defined in the base view of the application. You can

pass this identiﬁer as the

GetDictionaryData function’s argument. This

function returns a binary representation of the dictionary data (the words or items).

You can then place this binary object in a slot in a frame and add the frame to a

soup. The following code fragment assumes that the soup

kSoupName is a valid

soup created according to the Newton DTS soup-creation guidelines.

// get a soup in which to save the data

mySoup := GetUnionSoupAlways (kSoupName);

// create binary representation of dictionary data

local dict := GetRoot().appSym.mySpecialDictionary;

local theObj:= GetDictionaryData(dict);

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Apple Newton Utilities Guide de l'utilisateur Page 403

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