Understanding perl code


 
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Old 05-31-2012
Understanding perl code

What is the difference between the two statements below?

A:
$a->{"$fruit"}->{"$color"}->{size} = $size

B:
$size = $a->{"$fruit"}->{"$color"}->{size}

Please assist. Thanks!
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pods::SDL::Color(3pm)					User Contributed Perl Documentation				     pods::SDL::Color(3pm)

NAME
SDL::Color - Format independent color description CATEGORY Core, Video, Structure SYNOPSIS
my $black = SDL::Color->new(0, 0, 0); my $color = SDL::Color->new(255, 0, 0); my $r = $color->r; # 255 my $g = $color->g; # 0 my $b = $color->b; # 0 $color->g(255); $color->b(255); # $color is now white DESCRIPTION
"SDL_Color" describes a color in a format independent way. METHODS
new my $color = SDL::Color->new(255, 0, 0); The constructor creates a new color with the specified red, green and blue values. r my $r = $color->r; $color->r(128); If passed a value, this method sets the red component of the color; if not, it returns the red component of the color. g my $g = $color->g; $color->g(128); If passed a value, this method sets the green component of the color; if not, it returns the green component of the color. b my $b = $color->b; $color->b(128); If passed a value, this method sets the blue component of the color; if not, it returns the blue component of the color. SEE ALSO
SDL::Surface AUTHORS
See "AUTHORS" in SDL. perl v5.14.2 2012-05-28 pods::SDL::Color(3pm)