Prestwood IT: Delphi Associative Array (TStringList Assoc Array) (Pascal and Delphi Coding)

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Delphi Language Details:

Delphi Associative Array (TStringList Assoc Array)

By Mike Prestwood

Posted 16 years ago on 11/4/2008 and updated 1/20/2009

Delphi Code Snippet:

To/From Code Guide: Delphi Associative A... vs. Other Languages

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KB101517

General Info: Associative Array

A set of unique keys linked to a set of values. Each unique key is associated with a value. Think of it as a two column table. MyArray['CA'] = 'California' MyArray['AR'] = 'Arizona'

Languages Focus: Associative Array

Associative arrays are also known as a dictionary or a hash table in other languages.

Delphi Associative Array

Object Pascal doesn't have a native associative array, but you can use a TStringList the same way. (Alternatively, search the Internet for TStringHash and THashedStringList classes for implementations of a true associative array).

Syntax Example:

var
  StateList : TStringList;
begin
  StateList := TStringList.Create;

  StateList.CommaText := 'CA=California, FL=Florida';

  ShowMessage('FL is ' + StateList.Values['FL']);
end;

About Associative Array
A set of unique keys linked to a set of values. Each unique key is associated with a value. Think of it as a two column table. MyArray['CA'] = 'California' MyArray['AR'] = 'Arizona'

More Info

Definition:	Associative Array
Code:	Associative Arrays in Delphi/Object Pascal (Use TStringList)


Comments 1 Comments. Share a thought or comment...

PS_2840

Comment 1 of 1

Through reading this article, I have renewed my conceptualization related to the Delphi Associative Array. I get book report from online source whenever I need it for college purpose. I would be more grateful if you could provide more information about this array.

Posted 53 months ago

Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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