Solved

Why doesn´t my IF statement work

Posted on 1998-07-25
4
183 Views
Last Modified: 2010-03-05
Hi
I´m trying to make a kind of select expression with an if statement.
I have a While loop and I just want to print out those lines which matches the if statement.


if (("apple" || "banana") eq "banana") {
print "yes it worked";
} else {
print "No, it didn´t work";
}
This will not print out "yes it worked". I can solve it with the
elsif-thing, but because the if statement is inside a while-loop its not possible (as far as I know) to make it work.

I hope this information is sufficient.

Regards
Claes Lindvall
Sweden
0
Comment
Question by:cl071997
  • 2
4 Comments
 

Author Comment

by:cl071997
ID: 1208784
Edited text of question
0
 
LVL 6

Accepted Solution

by:
alamo earned 100 total points
ID: 1208785
This will work:

f ("apple" eq "banana" || "banana" eq "banana") {
    print "yes it worked";
} else {
    print "No, it didn´t work";
}

And I don't know why you say elsif won't work - the following works as well:
if ("apple" eq "banana") {
    print "yes it worked";
} elsif ("banana" eq "banana") {
    print "yes it worked";
} else {
    print "No, it didn't work";
}

The reason your original didn't work is ("apple" || "banana") was _always_ "apple", and therefore it was never equal to "banana".

Hope this helps!
0
 
LVL 84

Expert Comment

by:ozo
ID: 1208786
#another way to do it:
@fruit{qw(apple banana)} = (1) x 2;
if( $fruit{banana} ){
   print "yes it worked"
}else{
   print "No, it didn´t work"
}
0
 

Author Comment

by:cl071997
ID: 1208787
Great. Thank you so much...

Claes Lindvall
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Perl Script - Remove row of data based on column value 3 75
Perl modules on linux ec2 3 114
quoting a comma separated list 20 87
Create an automated page index 9 51
I've just discovered very important differences between Windows an Unix formats in Perl,at least 5.xx.. MOST IMPORTANT: Use Unix file format while saving Your script. otherwise it will have ^M s or smth likely weird in the EOL, Then DO NOT use m…
Email validation in proper way is  very important validation required in any web pages. This code is self explainable except that Regular Expression which I used for pattern matching. I originally published as a thread on my website : http://www…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

829 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