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annotate modules/dict.tp @ 267:d2b70cba661e

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Warning cleanup
author Michael Pavone <pavone@retrodev.com>
date Fri, 18 Jul 2014 00:14:22 -0700
parents 697c2c562af2
children bb4723fec05e
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1 {
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2 linearWithEls <- :els {
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3 key:val <- :k v {
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4 #{
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5 key <- k
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6 val <- v
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7 }
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8 }
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9 find <- :tofind {
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10 idx <- 0
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11 while: {
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12 if: idx < (els length) {
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13 ((els get: idx) key: ) != tofind
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14 } else: {false}
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15 } do: {
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16 idx <- idx + 1
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17 }
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18 if: idx < (els length) {idx} else: {-1}
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19 }
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20 #{
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21 set <- :k v {
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22 idx <- find: k
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23 if: idx < 0 {
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24 els append: (key: k val: v)
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25 } else: {
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26 (els get: idx) val!: v
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27 }
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28 self
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29 }
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30
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31 get <- :k {
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32 get: k withDefault: false
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33 }
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34
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35 get:withDefault <- :k default {
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36 idx <- find: k
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37 if: idx < 0 {
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38 default
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39 } else: {
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40 (els get: idx) val
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41 }
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42 }
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43
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44 get:elseSet <- :k :else {
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45 get: k else: {
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46 v <- else:
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47 els append: (key: k val: v)
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48 v
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49 }
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50 }
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51
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52 get:else <- :k :else {
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53 idx <- find: k
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54 if: idx < 0 {
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55 else:
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56 } else: {
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57 (els get: idx) val
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58 }
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59 }
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60
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61 contains? <- :k {
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62 (find: k) >= 0
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63 }
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64
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65 foreach <- :l {
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66 foreach: els :idx el {
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67 l: (el key) (el val)
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68 }
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69 }
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70
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71 map <- :fun {
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72 newels <- #[]
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73 foreach: els :idx el {
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74 newels append: (key: (el key) val: (fun: (el val)))
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75 }
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76 linearWithEls: newels
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77 }
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78
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79 length <- { els length }
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80 }
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81 }
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82 _empty <- #{
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83 empty? <- { true }
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84 }
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85 _makeBucket <- :key val {
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86 #{
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87 empty? <- { false }
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88 k <- key
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89 v <- val
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90 = <- :other { k = other }
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91 }
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92 }
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93 #{
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94 //requires only that keys support equality
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95 linear <- {
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96 linearWithEls: #[]
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97 }
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98
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99 //requires that keys support equality and hash
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100 hash <- {
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101
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102 _buckets <- #[
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103 _empty
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104 _empty
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105 _empty
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106 _empty]
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107 _size <- 0
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108 _hashdiffs <- #[0]
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109 #{
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110 size <- { size }
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111 ifget:else <- :key ifpres :ifnot {
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112 basehash <- key hash
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113 notdone <- true
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114 i <- 0
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115 ret <- _empty
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116
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117 while: { if: notdone { i < (_hashdiffs length)}} do: {
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118 hv <- basehash + (_hashdiffs get: i)
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119 trunc <- hv % (_buckets length)
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120 if: trunc < 0 { trunc <- 0 - trunc }
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121 bucket <- _buckets get: trunc
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122 if: (bucket empty?) {
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123 notdone <- false
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124 } else: {
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125 if: bucket = key {
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126 ret <- bucket
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127 notdone <- false
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128 }
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129 }
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130 i <- i + 1
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131 }
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132 if: (ret empty?) ifnot else: {
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133 ifpres: (ret v)
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134 }
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135 }
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136
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137 get:else <- :key :else {
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138 ifget: key :val {
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139 val
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140 } else: else
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141 }
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142
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143 contains? <- :key {
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144 ifget: key :_ {
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145 true
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146 } else: {
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147 false
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148 }
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149 }
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150
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151 set <- :key val {
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152 notdone <- true
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153 basehash <- key hash
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154 i <- 0
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155 while: { if: notdone { i < (_hashdiffs length) } } do: {
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156 hv <- basehash + (_hashdiffs get: i)
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157 trunc <- hv % (_buckets length)
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158 if: trunc < 0 { trunc <- 0 - trunc }
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159 bucket <- (_buckets get: trunc)
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160 if: (bucket empty?) {
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161 _size <- _size + 1
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162 _buckets set: trunc (_makeBucket: key val)
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163 notdone <- false
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164 } else: {
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165 if: bucket = key {
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166 bucket v!: val
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167 notdone <- false
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168 }
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169 }
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170 i <- i + 1
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171 }
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172 if: notdone {
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173 newsize <- (_buckets length) * 3 + 1
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174 lastdiff <- _hashdiffs get: ((_hashdiffs length) - 1)
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175 if: lastdiff <= 0 {
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176 _hashdiffs append: 0 - lastdiff + 1
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177 } else: {
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178 _hashdiffs append: 0 - lastdiff
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179 }
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180 newbucks <- #[]
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181 newbucks resize: newsize
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182 while: { (newbucks length) < newsize } do: {
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183 newbucks append: _empty
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184 }
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185 oldbucks <- _buckets
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186 _buckets <- newbucks
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187 _size <- 0
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188 foreach: oldbucks :idx el {
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189 if: (not: (el empty?)) {
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190 set: (el k) (el v)
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191 }
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192 }
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193 set: key val
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194 }
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195 self
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196 }
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197
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198 foreach <- :fun {
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199 foreach: _buckets :idx el {
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200 if: (not: (el empty?)) {
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201 fun: (el k) (el v)
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202 }
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203 }
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204 }
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205 }
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206 }
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207
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208 main <- {
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209 d <- hash
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210 d set: "foo" "bar"
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211 d set: "baz" "qux"
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212 i <- 0
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213 while: { i < 32 } do: {
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214 d set: (string: i) "blah " . (string: i)
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215 i <- i + 1
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216 }
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217 foreach: d :k v {
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218 print: "k: " . k . ", v: " . v . "\n"
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219 }
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220 0
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221 }
202
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222 }
74
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223 }