use strict;
use warnings;
use Data::Dump qw(pp);

my @lecshun;
 
push @lecshun, ["nameB" , {package=>"gemB", index=> 50}];
push @lecshun, ["nameA" , {package=>"gem",  index=>44}];
 
 
pp \@lecshun;
#[
#  ["nameB", { index => 50, package => "gemB" }],
#  ["nameA", { index => 44, package => "gem" }],
#]

# add a key/value pair to anon hash associated with
# name of 'nameA'

foreach my $index (0..$#lecshun)
{
   my ($name,$href) = @{$lecshun[$index]};
   if ($name eq 'nameA')
   {
      $href->{ 'newkey' } = 'NewValue'; #Just add new key/value to the
+ href!
   }
}

pp \@lecshun;

#[
#  ["nameB", { index => 50, package => "gemB" }],
#  [
#    "nameA",
#    { index => 44, newkey => "NewValue", package => "gem" },
#  ],
#]

################################
# Don't need to use indices, this is the same
use strict;
use warnings;
use Data::Dump qw(pp);

my @lecshun;
 
push @lecshun, ["nameB" , {package=>"gemB", index=> 50}];
push @lecshun, ["nameA" , {package=>"gem",  index=>44}];
 
 
pp \@lecshun;
#[
#  ["nameB", { index => 50, package => "gemB" }],
#  ["nameA", { index => 44, package => "gem" }],
#]

# add a key/value pair to anon hash associated with
# name of 'nameA'

foreach my $ref (@lecshun)
{
   my ($name,$href) = @$ref;
   if ($name eq 'nameA')
   {
      $href->{ 'newkey' } = 'NewValue';
   }
}

pp \@lecshun;

#[
#  ["nameB", { index => 50, package => "gemB" }],
#  [
#    "nameA",
#    { index => 44, newkey => "NewValue", package => "gem" },
#  ],
#]
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