IT SOLUTIONS
Your full service technology partner! 
-Collapse +Expand
Delphi
Search Delphi Group:

Advanced
-Collapse +Expand Delphi To/From
To/FromCODEGuides
-Collapse +Expand Delphi Store
PRESTWOODSTORE

Prestwood eMagazine

August Edition
Subscribe now! It's Free!
Enter your email:

   ► KBProgrammingDelphi for W...Language Det...   Print This     
Part of the mo. lesson in the Sep 08 Issue of Prestwood eMag
Delphi Code Snippet:
 A flashcard from our Delphi Flashcards Library
 A code snippet from our Delphi Code Snippets Page
Example: Using Sets in Borland Delphi

Simple example of using sets in Delphi. Sets are similar to arrays and are convenient to use with 'in'.


procedure TForm1.Button7Click(Sender: TObject);
var
ValidStrings: Set of Char;
begin
ValidStrings := ['Y', 'N', 'X'];
  If 'Y' in ValidStrings then
ShowMessage('Yes, Y is valid');
end;

Comments

0 Comments.
Share a thought or comment...
 
Write a Comment...
...
Sign in...

If you are a member, Sign In. Or, you can Create a Free account now.


Anonymous Post (text-only, no HTML):

Enter your name and security key.

Your Name:
Security key = P1102A1
Enter key:
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.

Visit Profile


Linked Certification Question(s)

The following are practice certification questions with answers highlighted. These questions were prepared by Mike Prestwood and are intended to stress an important aspect of this KB post. All our practice questions are intended to prepare you generally for passing any certification test as well as prepare you for professional work.

Intermediate

1 Intermediate Level Question

Question #1: Multiple Choice

Which is the correct syntax for declaring and using a set?

Answer:
1. 


var
  ValidStrings: Set Char;  
begin
ValidStrings := ['Y', 'N', 'X']; 
  
If 'Y' in ValidStrings then
  ShowMessage('Yes, Y is valid');
  
end;


2. 

var
  ValidStrings: Set of Char;  
begin
ValidStrings := ['Y', 'N', 'X']; 
  
If 'Y' in ValidStrings then
  ShowMessage('Yes, Y is valid');
  
end;

3. 


var
  ValidStrings: Set Char;  
begin
ValidStrings := ('Y', 'N', 'X'); 
  
If 'Y' in ValidStrings then
  ShowMessage('Yes, Y is valid');
  
end;


4. 


var
  ValidStrings: ArraySet of Char;  
begin
ValidStrings := ('Y', 'N', 'X'); 
  
If 'Y' in ValidStrings then
  ShowMessage('Yes, Y is valid');
  
end;


5. 


var
  ValidStrings: ArraySet Char;  
begin
ValidStrings := ['Y', 'N', 'X']; 
  
If 'Y' in ValidStrings then
  ShowMessage('Yes, Y is valid');
  
end;



 KB Article #100133 Counter
10659
Since 4/2/2008
Go ahead!   Use Us! Call: 916-726-5675  Or visit our new sales site: 
www.prestwood.com


©1995-2020 Prestwood IT Solutions.   [Security & Privacy]