Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

Re: Having a problem creating a hash with the map function

by tobyink (Canon)
on Nov 29, 2012 at 17:05 UTC ( [id://1006306]=note: print w/replies, xml ) Need Help??


in reply to Having a problem creating a hash with the map function

Well, the contents of your map block indicate that you don't understand map much. It needs to return something (but cannot use the return keyword!). You have the for loop as the last statement in the block, which returns undef.

# Try something like... # %hashmap = map { my ($city, @dealers) = @$_; $city => {map { $_ => 1 } @dealers}; } @car_city_dealer_aoa; print Dumper(\%hashmap);
perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://1006306]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others learning in the Monastery: (3)
As of 2024-03-19 04:48 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found