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annotate SolutionFile.m @ 35:61367018c46f

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Stoped using matFile object in SolutionFile. Changed to load for performance.
author Jonatan Werpers <jonatan@werpers.com>
date Tue, 06 Oct 2015 09:48:46 +0200
parents ddfb98209aa2
children dd4db0c97a02
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6b9b2283e7ed Added class for handleing .mat files as a key-value store.
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1 classdef SolutionFile < handle
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2 properties
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3 filename
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4 matfile
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5 keys % Cell array of keys. Each key is a structure
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6 % entries
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7 end
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8
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9 methods
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10 function obj = SolutionFile(filename)
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11
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12 obj.filename = filename;
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13
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14 is_new_file = ~exist(filename,'file');
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15
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16 % obj.matfile = matfile(filename,'Writable',true);
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17 fprintf('MATLAB SUCKS!!!!\n')
9
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18
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19 if is_new_file
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20 obj.matfile.keys = {};
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21 obj.matfile.entries = {};
32
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22 else
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61367018c46f Stoped using matFile object in SolutionFile. Changed to load for performance.
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23 loadStruct = load(filename);
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24 obj.matfile.keys = loadStruct.keys;
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25 obj.matfile.entries = loadStruct.entries;
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26
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27 % matObj = matfile(filename,'Writable',true);
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28 % obj.matfile.keys = matObj.keys;
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29 % obj.matfile.entries = matObj.entries;
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30 end
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31
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32 obj.keys = obj.matfile.keys;
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33
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34 end
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35
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36 function stupidSave(obj)
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37 matObj = matfile(obj.filename,'Writable',true);
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38
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39 keys = obj.matfile.keys;
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40 entries = obj.matfile.entries;
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41
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42 if exist(obj.filename,'file')
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43 delete(obj.filename);
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44 end
32
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45
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46 matObj = matfile(obj.filename,'Writable',true);
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47 matObj.keys = keys;
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48 matObj.entries = entries;
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49 end
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50
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51 function list(obj, show_syntax)
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52 default_arg('show_syntax',false);
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53 for i = 1:length(obj.keys)
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54 fprintf('[%d]: %s', i, struct2string(obj.keys{i}));
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55
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56 if show_syntax
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57 fprintf('\t%s',struct2syntax(obj.keys{i}));
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58 end
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59
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60 fprintf('\n');
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61 end
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62 end
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63
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64 % Returns the index for a key. Returns 0 if the key doesn't exist
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65 function I = getIndex(obj, key)
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66 I = 0;
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67
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68 for i = 1:length(obj.keys)
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69 if isequal(key,obj.keys{i});
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70 I = i;
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71 return
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72 end
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73 end
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74 end
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75
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76 function b = isKey(obj, key)
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77 I = obj.getIndex(key);
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78
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79 if I == 0
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80 b = false;
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81 else
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82 b = true;
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83 end
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84 end
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85
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86 % Gets entries where key match exactly.
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87 function e = get(obj, key)
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88 if ~obj.isKey(key);
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89 key
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90 error('No such key: %s', struct2string(key));
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91 end
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92
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93 I = obj.getIndex(key);
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1644d000c304 Fixed bug in SolutionsFile.m. Updated calculateSolution to also save a function handle to the Discr constructor.
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94 e = obj.getEntryByIndex(I); % unpack the cell array
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95 end
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96
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97
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98 % Handles indexing weirdness of matfile class
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99 function e = getEntryByIndex(obj, I)
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100 e = obj.matfile.entries(1,I);
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101 e = e{1};
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102 end
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103
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104 function e = deleteByIndex(obj, I)
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105 obj.keys(I) = [];
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106 obj.matfile.keys = obj.keys;
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107
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108 entries = obj.matfile.entries;
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109 entries(I) = [];
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110 obj.matfile.entries = entries;
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111 end
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112
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113 % Handles indexing weirdness of matfile class
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114 function setEntryByIndex(obj,I, entry, force_flag)
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115 default_arg('force_flag',false);
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116 if ~force_flag && ( I < 1 || I > length(obj.keys))
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117 error('I is out of range. I = %d',I);
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118 end
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119 obj.matfile.entries(1,I) = {entry};
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120 end
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121
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122 function store(obj, key, entry)
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123 if obj.isKey(key);
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124 I = obj.getIndex(key);
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125 else
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126 I = length(obj.keys) + 1;
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127 end
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128
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129 obj.keys{I} = key;
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130 obj.matfile.keys = obj.keys;
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131 obj.setEntryByIndex(I,entry,true);
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132 end
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133
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134 function delete(obj, key)
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135 if ~obj.isKey(key);
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136 error('No such key: %s', struct2string(key));
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137 end
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138 I = obj.getIndex(key);
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139 obj.deleteByIndex(I);
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140 end
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141
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142
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143
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144 % Gets entries where the defined parts of partial_key matches the key of the entry
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145 function [keys, entries] = find(obj,partial_key)
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146 keys = {};
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147 entries = {};
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148 for i = 1:length(obj.keys)
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149 if structIsSubset(partial_key,obj.keys{i})
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150 i
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151 obj.keys{i}
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152 keys{end + 1} = obj.keys{i};
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153 entries{end + 1} = obj.getEntryByIndex(i);
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154 end
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155 end
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156 end
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157 end
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158
18
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159 methods(Static)
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160 function merge(fn1, fn2, fnNew)
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161 sf1 = SolutionFile(fn1);
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162 sf2 = SolutionFile(fn2);
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163
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164 sfNew = SolutionFile(fnNew);
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165
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166 sfNew.keys = sf1.keys;
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167 sfNew.matfile.keys = sf1.keys;
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168 sfNew.matfile.entries = sf1.matfile.entries;
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169
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170 for i = 1:length(sf2.keys)
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171 if sfNew.isKey(sf2.keys{i})
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172 warning('Key ''%s'' exists in both files!',struct2string(sf2.keys{i}));
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173 end
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174 sfNew.store(sf2.keys{i},sf2.getEntryByIndex(i));
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175 end
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176 end
24
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177
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178
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179 function b = keyIsEqual(key1,key2)
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180 b = isequal(key1, key2);
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181 end
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182
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183 function b = keyIsIn(key,keys)
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184 b = false;
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185 for i = 1:length(keys)
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186 b = isequal(key, keys{i});
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187 if b
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188 return
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189 end
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190 end
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191 end
18
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192 end
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193
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194 end