1 package SL::MoreCommon;
6 @EXPORT = qw(save_form restore_form compare_numbers any cross);
7 @EXPORT_OK = qw(ary_union ary_intersect ary_diff);
14 $main::lxdebug->enter_sub();
16 my @dont_dump_keys = @_;
17 my %not_dumped_values;
19 foreach my $key (@dont_dump_keys) {
20 $not_dumped_values{$key} = $main::form->{$key};
21 delete $main::form->{$key};
24 my $old_form = YAML::Dump($main::form);
25 $old_form =~ s|!|!:|g;
26 $old_form =~ s|\n|!n|g;
27 $old_form =~ s|\r|!r|g;
29 map { $main::form->{$_} = $not_dumped_values{$_} } keys %not_dumped_values;
31 $main::lxdebug->leave_sub();
37 $main::lxdebug->enter_sub();
39 my ($old_form, $no_delete, @keep_vars) = @_;
41 my $form = $main::form;
42 my %keep_vars_map = map { $_ => 1 } @keep_vars;
44 map { delete $form->{$_} if (!$keep_vars_map{$_}); } keys %{$form} unless ($no_delete);
46 $old_form =~ s|!r|\r|g;
47 $old_form =~ s|!n|\n|g;
48 $old_form =~ s|![!:]|!|g;
50 my $new_form = YAML::Load($old_form);
51 map { $form->{$_} = $new_form->{$_} if (!$keep_vars_map{$_}) } keys %{ $new_form };
53 $main::lxdebug->leave_sub();
57 $main::lxdebug->enter_sub();
64 $main::all_units ||= AM->retrieve_units(\%main::myconfig, $main::form);
65 my $units = $main::all_units;
67 if (!$units->{$a_unit} || !$units->{$b_unit} || ($units->{$a_unit}->{base_unit} ne $units->{$b_unit}->{base_unit})) {
68 $main::lxdebug->leave_sub();
72 $a *= $units->{$a_unit}->{factor};
73 $b *= $units->{$b_unit}->{factor};
75 $main::lxdebug->leave_sub();
89 =item cross BLOCK ARRAY ARRAY
91 Evaluates BLOCK for each combination of elements in ARRAY1 and ARRAY2
92 and returns a new list consisting of BLOCK's return values.
93 The two elements are set to $a and $b.
94 Note that those two are aliases to the original value so changing them
95 will modify the input arrays.
100 @x = cross { "$a$b" } @a, @b;
101 # returns a1, a2, a3, b1, b2, b3, c1, c2, c3
103 As cross expects an array but returns a list it is not directly chainable
104 at the moment. This will be corrected in the future.
110 local (*A, *B) = @_; # syms for caller's input arrays
113 my ($caller_a, $caller_b) = do {
116 \*{$pkg.'::a'}, \*{$pkg.'::b'};
119 local(*$caller_a, *$caller_b);
121 # This map expression is also the return value.
122 map { my $a_index = $_;
123 map { my $b_index = $_;
124 # assign to $a, $b as refs to caller's array elements
125 (*$caller_a, *$caller_b) = \($A[$a_index], $B[$b_index]);
126 $op->(); # perform the transformation
131 sub _ary_calc_union_intersect {
136 foreach my $e (@$a, @$b) { $count{$e}++ }
140 foreach my $e (keys %count) {
142 push @isect, $e if $count{$e} == 2;
145 return (\@union, \@isect);
149 return @{ (_ary_calc_union_intersect @_)[0] };
153 return @{ (_ary_calc_union_intersect @_)[1] };
158 my %in_b = map { $_ => 1 } @$b;
159 return grep { !$in_b{$_} } @$a;