Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery
 
PerlMonks  

Re: Basic help with mapping

by sk (Curate)
on Nov 22, 2005 at 04:29 UTC ( #510634=note: print w/replies, xml ) Need Help??


in reply to Basic help with mapping

Am i missing something? Your second map logic works fine (modified space to -) if i understand the problem

#!/usr/bin/perl use strict; use warnings; use Data::Dumper; my $AoH_orig = [ { 'title' => 'aaa-aaa', 'name' => 'tom' }, { 'title' => 'bbb-bbb', 'name' => 'kathy' }, { 'title' => 'ccc-ccc', 'name' => 'bill' } ]; #try mapping print Dumper ($AoH_orig); my $AoH_new = map { $_->{'title'} =~ s/-/_/g } @$AoH_orig; print Dumper($AoH_orig);

$VAR1 = [ { 'name' => 'tom', 'title' => 'aaa-aaa' }, { 'name' => 'kathy', 'title' => 'bbb-bbb' }, { 'name' => 'bill', 'title' => 'ccc-ccc' } ]; $VAR1 = [ { 'name' => 'tom', 'title' => 'aaa_aaa' }, { 'name' => 'kathy', 'title' => 'bbb_bbb' }, { 'name' => 'bill', 'title' => 'ccc_ccc' } ];

All dashes (-) are replaced with underscore (_) isn't that what you are trying?

I probably will not use map for this as you are not returning a list back. I would stick with your for for idea.

 $_->{'title'} =~ s/-/_/g for(@$AoH_orig); should work just fine (i think)

cheers

SK

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://510634]
help
Chatterbox?
[stevieb]: well, what happens is the Arduino 'listens' for requests r/w, and does the appropriate thing when it's interrupted based on the 'register' address sent in. It's ugly as it was my first attempt, but I've got great new ideas I'm just sitting.
[stevieb]: ...down to implement now. Here's the sketch as it currently sits
[shmem]: well I use I2C and SPI and stuff, but creating a pseudo chip looks to me like lot of indirection and memory clutter... not?
[choroba]: Are you going to use the device soon? Related to your comment about "not having much time to do a lot of coding"...
[stevieb]: sure, but I'm just learning ;) I consider it practice to get a good understanding of what goes on *after* an I2C/SPI request is made
[shmem]: ah ok. Gonna read that. but now....
shmem compiles himself into his template
[stevieb]: this is my RPi:: distribution overall automation build system physical layout. It doesn't encompass all of my RPi dists yet, ...
[stevieb]: ...but I'm getting close. I've been soldering my own PCBs to gain that experience as well, before I have my own manufactured.
[stevieb]: heh, nice *template* ;) 'night shmem!

How do I use this? | Other CB clients
Other Users?
Others having an uproarious good time at the Monastery: (9)
As of 2017-06-25 22:45 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    How many monitors do you use while coding?















    Results (572 votes). Check out past polls.