You will note that some Action properties are of type TStrings. TStrings is a standard Delphi type that we have exposed to the scripting engine. It is basically a string collection. Below are the properties of TStrings that you will find useful:
| Method Call | Example |
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| Description |
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| procedure Clear; |
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| Action.ListOfItems.Clear; | Clears the TStrings object of all the strings it contains. | |
| function Add(const |
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| text: string): Integer; | var index = Action.ListOfItems.Add('Item 5'); |
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| Appends a string to the end of the list of string the TStrings object contains. The index of the newly added text is returned. | |
| procedure Delete( |
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| index: Integer); |
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| Action.ListOfItems.Delete(5); | Deletes the string located at the passed in index. If the index does not exist and error is generated. | |
| procedure Insert( |
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| index: Integer; const |
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| text: string); |
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| Action.ListOfItems.Insert(5, 'Item 5'); | Inserts the passed in text at the passed in index. If the index is outside the bounds of the list which the TStrings object holds and error is generated. | |
| function IndexOf(const |
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| text: string): Integer; |
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| Action.ListOfItems.IndexOf('Item 5'); | Returns the index of the passed in string. If it doesn't exist in the list of string held by the TStrings object, -1 is returned. |
| property Strings[ |
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| index: Integer]: string |
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| ; | var item5Text = Action.ListOfItems.Strings[5]; | Returns the text held at the passed in index. The index is zero based |
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| . If the index does not exist in the current list of string help by the TStrings object an error is raised. |
| property Count: Integer; |
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| var count = Action.ListOfItems.Count; | Returns the number of string held by the TStrings object. | |
| property Text: string; | var list = Action.ListOfItems.Text; | //returns the entries in the collection, each entry on a new line |
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| property Names[ |
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| index: Integer]: string; | var item5Name = Action.ListOfItems.Names[5]; | // used to access the name of a string which is of the format <name>=<value> |
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| property Values[ |
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| name: String]: string; | var item5Value = Action.ListOfItems.Values[item5Name]; | // used to access the value of a string which is of the format <name>=<value> |
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| property ValueFromIndex[ |
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| index: Integer] : string; | var item5Value = Action.ListOfItems.ValueFromIndex[5]; | // used to access the value of a string which is of the format <name>=<value> |
Example
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The following code reduces each item in a List Iterator's list of items down to its leftmost three characters:
