Re^5: map vs for\foreach.


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Re^5: map vs for\foreach.

by karlgoethebier (Abbot)

on Mar 13, 2015 at 18:31 UTC ( [id://1119984]=note: print w/replies, xml )

Need Help??

in reply to Re^4: map vs for\foreach.
in thread map vs for\foreach.

BTW:

#!/usr/bin/env perl
use strict;
use warnings;
use Data::Dump;

my @original_data_set = ( 1 .. 10 );
dd \@original_data_set;

my @modified_data_set = map { $_++} @original_data_set;
dd \@original_data_set, \@modified_data_set;

__END__
karl-mac-mini:monks karl$ ./1119980.pl
[1 .. 10]
([2 .. 11], [1 .. 10])
[download]

Best regards, karl

ŤThe Crux of the Biscuit is the Apostropheť

Comment on Re^5: map vs for\foreach. Download Code

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Re^6: map vs for\foreach. by LanX (Saint) on Mar 13, 2015 at 18:38 UTC
So the so called "modified" set isn't really modified because its a post increment. While being consistent and logic it's indeed surprising, and a good reason to generally prefer pre-increments. edit Thanks seems like I have to rethink my habit. Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :)} PS: Je suis Charlie!	[reply]