foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo [== ${scalar_variable} =] [== ${hash_variable}->{hash_value_key} =] [== ${array_variable}->[ 2 ] =] [== ${this}->{is}->{a}->{very}->{deep}->{hash}->{structure} =] [== $_ =] [== $_ =]: [== ${hash_loop}->{$_} =] [== $_->{name} =]: [== $_->{age} =] [== $_ =] [== $_ =]: [== ${hash_loop}->{$_} =] [== $_->{name} =]: [== $_->{age} =] true true truefalse truefalse [== ${template_if_true} =] [== ${template_if_true} =] [== ${template_if_true} =][== ${template_if_false} =] [== ${template_if_true} =][== ${template_if_false} =] [== 10 + 12 =] [== ${variable_expression_a} * ${variable_expression_b} =] [== ( ( ${variable_expression_a} * ${variable_expression_b} ) + ${variable_expression_a} - ${variable_expression_b} ) / ${variable_expression_b} =] [== substr( 'this has a substring.', 11, 9 ) =] [== substr( ${variable_function_arg}, 4, 2 ) =]