Re: How to substitute the elements in an array without changing the original array. - map

[imp]

in reply to How to substitute the elements in an array without changing the original array.

See map.

my @source = (1,2,3,4);
my @dest = map { $_ * 2 } @source;
print "@source\n";
print "@dest\n";

#Output:
#1 2 3 4
#2 4 6 8

my @source = ('bob', 'joe');
my @dest = map { $_ eq 'bob' ? ucfirst($_) : $_ } @source;
print "@source\n";
print "@dest\n";
#Output:
#bob joe
#Bob joe

[perladdict]

@a=("sedam","medam","kadam","sadam");
for(@b=@a)
{
  s/dam/lam/;
}
print "@b\n";
print "@a";