Hi monks
Haven't asked a question in a while but this is an interesting case (also I really need to solve it).
Say I have a list of hashes, for example:

@students = (
{
   name  => "Guy",
   college => "Yale",
},
{
   name  => "Gil",
   college => "Harvard",
},
{
   name  => "Gil",
   college => "Harvard",
},
);
[download]

I want to make this list unique, meaning it needs to look like this:

@uniq_students = (
{
   name  => "Guy",
   college => "Yale",
},
{
   name  => "Gil",
   college => "Harvard",
},
);
[download]

List::MoreUtils::uniq doesn't work on lists of hashes so that's a no go. I can do it for one hash key (below) but for 2 or more keys it's tricky

##Solution for one hash key
my @unique = do { my %seen; grep { !$seen{$_->{name}}++ } @students};
[download]

Of course I can find a workaround (e.g. make each hash into a string and then sort ...) but I would like to try and find something better (and shorter) if possible
Any ideas?

---

Everybody seems to think I'm lazy
I don't mind, I think they're crazy

---

In reply to Unique list of hashes by mrguy123

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