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$mod=default/main/Workarea/f+ abc.gif

homesick123

What regex should I write to convert the above string to

default/main/Workarea/abc.gif

I tried
$mod=tr|\/f\+ +|/|
But this doesnt seem to help.

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homesick123

What regex should I write to convert the above string to

default/main/Workarea/abc.gif

I tried
$mod=tr|\/f\+ +|/|
But this doesnt seem to help.

Another query,
I have @array1={"a/b/c/d/e", "p/q/r","a/b/c/d","g/h/i","g/h/i/j/k"} i want to use a regex so that i am left with-
@array2={"a/b/c/d","p/q/r","g/h/i"}

Sailesh

For your first query try this...

$mod="default/main/Workarea/f+ abc.gif";

$mod =~ s/f\+\s//g;

Sailesh

Regarding your second query...

What logic you want to implement??

Adam Stoller

What regex should I write to convert the above string to

default/main/Workarea/abc.gif

I tried
$mod=tr|\/f\+ +|/|
But this doesnt seem to help.

I strongly recommend you invest in several Perl books and/or a training class - since you seem to be trying to work with Perl code and do not seem to know how.

In the above case - you are using the wrong operation - you are using transliteration when you want to use substitution - you are also using an assignment operator when you want to use a binary regex operator, and you should probably use the escape sequence for white-space instead of trying to hard-code the actual white-space character(s) into your regex.

Adam Stoller

Another query,
I have @array1={"a/b/c/d/e", "p/q/r","a/b/c/d","g/h/i","g/h/i/j/k"} i want to use a regex so that i am left with-
@array2={"a/b/c/d","p/q/r","g/h/i"}

As written - this question makes absolutely no sense - since the difference between the initial strings and the desired resultant strings is completely arbitrary - and as such there is no single logical expression that can be used to perform such an arbitrary transformation.

homesick123

As written - this question makes absolutely no sense - since the difference between the initial strings and the desired resultant strings is completely arbitrary - and as such there is no single logical expression that can be used to perform such an arbitrary transformation.

I have @array1={"a/b/c/d/e", "p/q/r","a/b/c/d","g/h/i","g/h/i/j/k"} i want to use a regex so that i am left with-
@array2={"a/b/c/d","p/q/r","g/h/i"}

The above can also be read as:
@array1={"default/main/Workarea/wa1/abc.htm","default/main/Workarea/wa1","default/main/Workarea/wa2","default/main/Workarea/wa2/home/xyz.txt","default/main/Workarea/wa3/pqr.asp"} .This array should be transformed to-
@array2=
{"default/main/Workarea/wa1","default/main/Workarea/wa2","default/main/Workarea/wa3/pqr.asp"}

Here ,
@array2 choses "default/main/Workarea/wa1" between "default/main/Workarea/wa1/abc.htm" and "default/main/Workarea/wa1" .The same applies to other array elements.
I hope the question is clear this time.

kaalraa

I have @array1={"a/b/c/d/e", "p/q/r","a/b/c/d","g/h/i","g/h/i/j/k"} i want to use a regex so that i am left with-
@array2={"a/b/c/d","p/q/r","g/h/i"}

The above can also be read as:
@array1={"default/main/Workarea/wa1/abc.htm","default/main/Workarea/wa1","default/main/Workarea/wa2","default/main/Workarea/wa2/home/xyz.txt","default/main/Workarea/wa3/pqr.asp"} .This array should be transformed to-
@array2=
{"default/main/Workarea/wa1","default/main/Workarea/wa2","default/main/Workarea/wa3/pqr.asp"}

Here ,
@array2 choses "default/main/Workarea/wa1" between "default/main/Workarea/wa1/abc.htm" and "default/main/Workarea/wa1" .The same applies to other array elements.
I hope the question is clear this time.

I think you are asking much more than what Programming Language can offer. However if you see your question then you would definitely find out that on the first 2 elements... it just purging the filename out of the complete path, but for 3rd element it again asks to stay with filename.

If you are in a loop then definitely... you have to put some clauses to differentiate between the workareas. (Basic programming concept).

Apart from this post, you have also opened up another post in which you are asking to remove the duplicates of an array. PLEASE.. do not cross post or post same query in a different way.

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homesick123

I think you are asking much more than what Programming Language can offer. However if you see your question then you would definitely find out that on the first 2 elements... it just purging the filename out of the complete path, but for 3rd element it again asks to stay with filename.

If you are in a loop then definitely... you have to put some clauses to differentiate between the workareas. (Basic programming concept).

Apart from this post, you have also opened up another post in which you are asking to remove the duplicates of an array. PLEASE.. do not cross post or post same query in a different way.

I am not cross posting or posting the same query.Its the doubts I had while solving different problems at different times.Are there any rules over the usage of this forum which I am violating. I dont think I did that.

kaalraa

I am not cross posting or posting the same query.Its the doubts I had while solving different problems at different times.Are there any rules over the usage of this forum which I am violating. I dont think I did that.

I am not the principal of the forum, who can define the usage rules and guidelines. However, it was just a suggestion... when you have two different queries related to a same topic ... then please use the same post.

Adam Stoller

I have @array1={"a/b/c/d/e", "p/q/r","a/b/c/d","g/h/i","g/h/i/j/k"} i want to use a regex so that i am left with-
@array2={"a/b/c/d","p/q/r","g/h/i"}

The above can also be read as:
@array1={"default/main/Workarea/wa1/abc.htm","default/main/Workarea/wa1","default/main/Workarea/wa2","default/main/Workarea/wa2/home/xyz.txt","default/main/Workarea/wa3/pqr.asp"} .This array should be transformed to-
@array2=
{"default/main/Workarea/wa1","default/main/Workarea/wa2","default/main/Workarea/wa3/pqr.asp"}

Here ,
@array2 choses "default/main/Workarea/wa1" between "default/main/Workarea/wa1/abc.htm" and "default/main/Workarea/wa1" .The same applies to other array elements.
I hope the question is clear this time.

Let me see if I have this straight - you want to process a list of paths such that for any path that exists within a workarea path that is also part of the list - just include the workarea path, and for any path that does not exist as a workarea path within the list - return the full path?

So you need to first determine what workarea paths already exist in the list , then you need to determine which elements do not match against those found in the first pass.

If so - I think that while you might be able to do this in one pass - two passes would probably be cleaner and less prone to errors.

Because I'm in a good mood right now - I'll provide you some code here - but you really should be able to work this kind of thing out for yourself:

...
my @array1 = (
    "default/main/WORKAREA/wa1/abc.htm",
    "default/main/WORKAREA/wa1",
    "default/main/WORKAREA/wa2",
    "default/main/WORKAREA/wa2/home/xyz.txt",
    "default/main/WORKAREA/wa3/pqr.asp"
);

my $results = process(\@array1);
print "RESULTS:\n\t" . join("\n\t", sort(@$results)) . "\n";

sub process{
    my $full_list = shift;
    my %seen;
    my @results = grep(m|^.*/WORKAREA/[^/]+$| && !$seen{$_}++, @$full_list);

  ENTRIES:
    foreach my $entry (@$full_list){
        foreach my $wapath (keys(%seen)){
            next ENTRIES if ($entry =~ m|^$wapath|);
        }
        push(@results, $entry);
    }
    return \@results;
}

As a demonstration on your part of an interest to really learn something here - as opposed to just getting others to do your work for you, for free - I suggest you post an explanation of how the above code works.

Frederik

Just a reflection: as a developer/analyst I don't like to have a requirement explained by an example only. A requirement should be stated logically.

E.g. the requirement might be: out of a list of vpaths, all 'children' vpaths are removed if any parent vpath is present. It (is/is not) required that the order of the remaining elements is the same as in the original list.

But one can see for instance that from the one example that's been given, the logic implemented is: out of a list of vpaths, any vpath is erased if the parent *workarea* vpath is present in the list.

Sorry to preach ;-)

Adam Stoller

Just a reflection: as a developer/analyst I don't like to have a requirement explained by an example only. A requirement should be stated logically.

E.g. the requirement might be: out of a list of vpaths, all 'children' vpaths are removed if any parent vpath is present. It (is/is not) required that the order of the remaining elements is the same as in the original list.

But one can see for instance that from the one example that's been given, the logic implemented is: out of a list of vpaths, any vpath is erased if the parent *workarea* vpath is present in the list.

Sorry to preach ;-)

Preaching is okay :-)
As it happens, I agree - I simply tried to extract the requirements from the example given - no idea if I extracted it correctly though....