@@ -10,7 +10,7 @@  | 
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| 10 | 10 | public function evaluate($exp, Env $env, Evaluator $evaluate)  | 
                                                        
| 11 | 11 |      { | 
                                                        
| 12 | 12 | [$lambda, $params, $body] = $exp;  | 
                                                        
| 13 | -        return function (...$args) use ($env, $body, $params, $evaluate) { | 
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| 13 | +        return function(...$args) use ($env, $body, $params, $evaluate) { | 
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| 14 | 14 | return $evaluate($body, env_extend($env, array_combine($params, $args)));  | 
                                                        
| 15 | 15 | };  | 
                                                        
| 16 | 16 | }  |