Solved

Check if char variable is in an array using a "set" type comparison

Posted on 2015-02-12
6
131 Views
Last Modified: 2015-02-15
Hi all, I'm doing some "set type" comparisons in my app like this:

if h1 in ['0'..'9'] then....

Open in new window


.. where h1 is just a variable of char. No problem there, but I have a string array that contains a collection of punctuation characters ('!','#','.','?','%' etc) and I'm wondering if there's a comparable way (ie. using the "in" operator) to check if my variable h1 contains any of these characters. As in:

if h1 in PunctuationArray

Open in new window


... or something like that.

Thanks!
    Shawn
0
Comment
Question by:shawn857
6 Comments
 
LVL 49

Accepted Solution

by:
Rgonzo1971 earned 500 total points
ID: 40607394
Hi,

have you tried AnsiMatchStr or MatchStr

source := 'Henry';  
 if AnsiMatchStr(source, ['Brian', 'Jim', 'Henry'])
  then ShowMessage('First match was successful')
  else ShowMessage('First match was not successful');


http://www.delphibasics.co.uk/RTL.asp?Name=AnsiMatchStr

Regards
0
 
LVL 100

Expert Comment

by:mlmcc
ID: 40607899
So if h1 is a string   and your set is like above ['!','#','.','?','%', ',' ] you want to see if any of the punctuation characters are in the string, h1?

So if h1 = "Peter and Paul" the answer is false but if it is "Peter, Paul, and Mary" it is true.

In that case code like this should find it

Haschar := False;
For I := 0  to High(YourArray) 
    If POS(YourArray[I], h1) then
       Haschar := True;

Open in new window

mlmcc
0
 
LVL 26

Expert Comment

by:Sinisa Vuk
ID: 40607968
Similar to upper example - iterate your array and instead of pos (which can check only one char in time)
use function CheckString from this question: Q_28229176
0
Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

 

Author Closing Comment

by:shawn857
ID: 40609094
Thanks to all who responded.

Cheers
   Shawn
0
 
LVL 100

Expert Comment

by:mlmcc
ID: 40609282
How does that answer the issue or did I not understand your question?

mlmcc
0
 

Author Comment

by:shawn857
ID: 40611738
Hi mlmcc... you were looking at it backwards I think. Variable h1 contains just one character, and I want to see if that character is contained anywhere in the set ['!','#','.','?','%', ',' ]

Thanks for contributing though...

Cheers
   Shawn
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
Introduction I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need. This article will address some of the concepts when dealing with a multithreaded delphi database…
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question