Re^2: Is there a simple syntax to logically slice a hash?

Ouch!. That creates 5 unneccesary temporary lists and an unneccesary temporary array:

#T1  L2             L1      
@a = grep { /cat/ } keys %h1
#  L5    L4  L3
@b{@a} = @h1{@a}
[download]

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

Comment on Re^2: Is there a simple syntax to logically slice a hash? Download Code