Remove trailing spaces in file docs/source/developers/guides/code/code_standard.rst

docs/source/developers/guides/code/code_standard.rst

@@ -20,7 +20,7 @@ How to install ``perltidy`` tool:
 * **[RHEL]** ::
 
     yum install perltidy.noarch
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+
 * **[UBUNTU]** ::
 
     apt-get install perltidy
@@ -31,15 +31,15 @@ Code Standard Example:
 ::
 
     #! /usr/bin/perl
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+
     # This is a perl program example to demo the recommended
     # style to write perl code
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+
     use strict;
     use warnings;
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+
     #--------------------------------------------------------------------------------
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+
     =head3   subroutine_example
         Descriptions:
             This a subroutine to demo how to write perl code
@@ -51,46 +51,46 @@ Code Standard Example:
             0 - success
             0 - fail
     =cut
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+
     #--------------------------------------------------------------------------------
     sub subroutine_example {
         my ($param1, $param2, $param3) = @_;
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+
         print "In the subroutine subroutine_example.\n";
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         return 0;
     }
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+
+
     # Declare variables
     my $a_local_scale;
     my @a_local_array;
     my %a_local_hash;
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     $a_local_scale = 1;
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     @a_local_array = ("a", "b", "c");
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     %a_local_hash = (
         "v1" => 1,
         "v2" => 2,
         "v3" => 3,
     );
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+
     # Demo how to check the key of hash
     if (%a_local_hash and
         defined($a_local_hash{v1}) and
         defined($a_local_hash{v2}) and
         defined($a_local_hash{v3})) {
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         # Calculate the sum of values
         my $sum_of_values = $a_local_hash{v1}
           + $a_local_hash{v2}
           + $a_local_hash{v3};
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         print "The sum of values: $sum_of_values.\n";
     }
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+
     # Demo how to check whether the array is empty
     if (@a_local_array) {
         print "Has element in array: " . join(',', @a_local_array) . "\n";
@@ -102,8 +102,8 @@ Code Standard Example:
         # None of above
         print "Get into the default path.\n";
     }
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     # Call the subroutine subroutine_example()
     subroutine_example($a_local_scale, \@a_local_array, %a_local_hash);
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+
     exit 0;