taking a slice of a hash

[AMiSM]

Hi, all!
Is there something similar to the 'grep' function when working with hashes? e.g. -

%hash = ( "abc", "a"
"abd", "b"
"abe", "c"
"acd", "d"
"ace", "e" );

somefunction ( /ab/, %hash ); => ( a, b, c )

 

[rharsh]

You can still use grep. Something like this will work:

my %hash = ( "abc", "a",
          "abd", "b",
          "abe", "c",
          "acd", "d",
          "ace", "e" );

my @results = map {$hash{$_}} grep {/ab/} keys %hash;
print "@results";

 

[MillerH]

Yes. The function that is similar to grep for hash functions is .... wait for it .... grep!

That's right. grep is a more than one data type kind of function. It's very 21st century like that.

Just take advantage of the functions values and keys whenever wanting to perform grep operations on a hash.

The exact problem that you displayed above is rather simple unfortunately, but basically what I saw there was this.

# Give me all values of %hash where the key is similar to /ab/. Well if that's what you want, just code it out


%hash = ( "abc", "a"
"abd", "b"
"abe", "c"
"acd", "d"
"ace", "e" );

my @array = map {$hash{$_}} grep { /ab/ } keys %hash;


This returns. ('a', 'b', 'c') # Not necessarily in that order.

 

[AMiSM]

Well, I was overthinking the problem at hand, making it more difficult than it had to be. But this reply will be useful later, I'm sure!
Thank you both!