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annotate modules/list.tp @ 190:372cbd2cd243

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Added reverse method to lists
author Mike Pavone <pavone@retrodev.com>
date Mon, 26 Aug 2013 18:59:38 -0700
parents 7e313849ab41
children f3d5068cbd43
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1 {
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2 _empty <- #{
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3 length <- { 0 }
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4 empty? <- { true }
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5 fold:with <- :acc :fun { acc }
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6 foldr:with <- :acc :fun { acc }
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7 map <- :fun { self }
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8 | <- :val {
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9 list node: val withTail: self
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10 }
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11 . <- :right { right }
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12 reverse <- { self }
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13 join <- { "" }
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14 string <- { "[]" }
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15 print <- { print: string }
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16 }
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17 #{
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18 empty <- { _empty }
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19 node:withTail <- :_val :_tail {
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20 #{
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21 value <- { _val }
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22 tail <- { _tail }
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23 empty? <- { false }
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24 length <- {
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25 fold: 0 with: :acc val { acc + 1 }
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26 }
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27 fold:with <- :acc :fun {
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28 cur <- self
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29 while: { not: (cur empty?)} do: {
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30 acc <- fun: acc (cur value)
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31 cur <- cur tail
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32 }
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33 acc
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34 }
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35 foldr:with <- :acc fun {
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36 fun: (_tail foldr: acc with: fun) _val
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37 }
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38 map <- :fun {
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39 node: (fun: _val) withTail: (_tail map: fun)
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40 }
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41 foreach <- :self fun {
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42 fold: 0 with: :idx el{
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43 fun: idx el
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44 idx + 1
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45 }
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46 self
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47 }
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48 | <- :val {
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49 node: val withTail: self
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50 }
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51 . <- :right {
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52 foldr: right with: :tail val {
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53 node: val withTail: tail
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54 }
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55 }
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56 reverse <- {
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57 fold: [] with: :tail val {
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58 node: val withTail: tail
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59 }
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60 }
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61 join <- :sep {
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62 _tail fold: (string: _val) with: :acc el {
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63 acc . sep . el
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64 }
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65 }
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66 string <- {
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67 (fold: "[\n" with: :acc el {
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68 acc . " " . (string: el) . "\n"
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69 }) . "]"
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70 }
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71 print <- {
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72 print: "[\n"
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73 foreach: :_ el {
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74 print: " " . (string: el) . "\n"
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75 }
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76 print: "]"
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77 }
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78 }
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79 }
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80 }
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81 }