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191
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1 var something;
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2
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3 TEST('read scope', function()
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4 {
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5 var a;
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6 a = 3;
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7
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8 // 1
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9 var fn_1 = function(a){
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10 return a;
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11 };
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12
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13 assert( fn_1(42) === something );
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14
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15 // 2
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16 var fn_2 = function(b){
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17 return a;
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18 };
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19
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20 assert( fn_2(42) === something );
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21
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22 // 3
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23 var fn_3 = function(b){
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24 var a = b - 10;
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25 return a;
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26 };
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27
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28 assert( fn_3(42) === something );
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29 });
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30
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31
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32 TEST('assign scope', function()
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33 {
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34 var a;
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35
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36 // 1
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37 var fn_1 = function(a){
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38 a = 5;
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39 };
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40
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41 a = 3;
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42 fn_1(42);
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43 assert( a === something );
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44
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45 // 2
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46 var fn_2 = function(b){
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47 a = 5;
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48 };
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49
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50 a = 3;
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51 fn_2(42);
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52 assert( a === something );
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53
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54 // 3
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55 var fn_3 = function(b){
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56 var a = b;
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57 };
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58
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59 a = 3;
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60 fn_3(42);
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61 assert( a === something );
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62
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63 // 4
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64 var fn_4 = function(b){
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65 a = b;
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66 };
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67
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68 a = 3;
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69 fn_4(42);
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70 assert( a === something );
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71 });
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72
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73
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74 TEST('function body', function()
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75 {
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76 var a;
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77 var b;
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78
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79 var fn_1 = function(c){
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80 // Please write your answer here.
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81 };
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82
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83 a = 3;
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84 b = fn_1(5);
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85 assert( a === 5);
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86 assert( b === 3 * 5 );
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87
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88 });
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