prosody
4d4f9e42bcf8
util/array.lua

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util/array.lua @ 13211:4d4f9e42bcf8

moduleapi: Add :get_option_integer() Many options in Prosody that are treated as numbers don't make sense as floats, e.g. sizes and limits measured in bytes. Simplified implementation based on an earlier attempt dating back to 2020
author Kim Alvefur <zash@zash.se>
date Mon, 17 Jul 2023 00:09:41 +0200
parent 13141:451cb119026e
child 13245:ffe4adbd2af9
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local t_insert, t_sort, t_remove, t_concat
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10 = table.insert, table.sort, table.remove, table.concat;
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11 local t_move = require "prosody.util.table".move;
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12
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13 local setmetatable = setmetatable;
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14 local getmetatable = getmetatable;
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15 local math_random = math.random;
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16 local math_floor = math.floor;
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17 local pairs, ipairs = pairs, ipairs;
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18 local tostring = tostring;
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19 local type = type;
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20
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21 local array = {};
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22 local array_base = {};
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23 local array_methods = {};
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24 local array_mt = {
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25 __index = array_methods;
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26 __name = "array";
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27 __tostring = function (self) return "["..self:concat(", ").."]"; end;
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28 };
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30 function array_mt:__freeze() return self; end
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31
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32 local function new_array(self, t, _s, _var)
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33 if type(t) == "function" then -- Assume iterator
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34 t = self.collect(t, _s, _var);
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35 end
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36 return setmetatable(t or {}, array_mt);
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37 end
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38
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39 array.new = new_array;
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40
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41 function array_mt.__add(a1, a2)
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42 local res = new_array();
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43 return res:append(a1):append(a2);
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44 end
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45
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46 function array_mt.__eq(a, b)
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47 if getmetatable(a) ~= array_mt or getmetatable(b) ~= array_mt then
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48 -- Lua 5.3+ calls this if both operands are tables, even if metatables differ
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49 return false;
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50 end
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51 if #a == #b then
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52 for i = 1, #a do
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53 if a[i] ~= b[i] then
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54 return false;
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55 end
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56 end
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57 else
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58 return false;
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59 end
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60 return true;
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61 end
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62
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63 function array_mt.__div(a1, func)
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64 local a2 = new_array();
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65 local o = 0;
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66 for i = 1, #a1 do
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67 local new_value = func(a1[i]);
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68 if new_value ~= nil then
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69 o = o + 1;
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70 a2[o] = new_value;
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71 end
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72 end
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73 return a2;
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74 end
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75
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76 setmetatable(array, { __call = new_array });
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77
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78 -- Read-only methods
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79 function array_methods:random()
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80 return self[math_random(1, #self)];
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81 end
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82
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83 -- Return a random value excluding the one at idx
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84 function array_methods:random_other(idx)
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85 local max = #self;
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86 return self[((math.random(1, max-1)+(idx-1))%max)+1];
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87 end
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88
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89 -- These methods can be called two ways:
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90 -- array.method(existing_array, [params [, ...]]) -- Create new array for result
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91 -- existing_array:method([params, ...]) -- Transform existing array into result
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92 --
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93 function array_base.map(outa, ina, func)
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94 for k, v in ipairs(ina) do
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95 outa[k] = func(v);
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96 end
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97 return outa;
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98 end
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99
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100 function array_base.filter(outa, ina, func)
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101 local inplace, start_length = ina == outa, #ina;
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102 local write = 1;
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103 for read = 1, start_length do
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104 local v = ina[read];
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105 if func(v) then
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106 outa[write] = v;
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107 write = write + 1;
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108 end
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109 end
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110
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111 if inplace and write <= start_length then
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112 for i = write, start_length do
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113 outa[i] = nil;
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114 end
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115 end
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116
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117 return outa;
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118 end
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119
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120 function array_base.slice(outa, ina, i, j)
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121 if j == nil then
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122 j = -1;
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123 end
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124 if j < 0 then
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125 j = #ina + (j+1);
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126 end
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127 if i < 0 then
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128 i = #ina + (i+1);
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129 end
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130 if i < 1 then
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131 i = 1;
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132 end
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133 if j > #ina then
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134 j = #ina;
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135 end
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
136 if i > j then
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
137 for idx = 1, #outa do
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
138 outa[idx] = nil;
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
139 end
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
140 return outa;
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
141 end
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
142
12403
42b2713ab818 util.array: Take advantage of table.move()
Matthew Wild <mwild1@gmail.com>
parents: 11787
diff changeset
143
42b2713ab818 util.array: Take advantage of table.move()
Matthew Wild <mwild1@gmail.com>
parents: 11787
diff changeset
144 t_move(ina, i, j, 1, outa);
11787
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
145 if ina == outa then
12403
42b2713ab818 util.array: Take advantage of table.move()
Matthew Wild <mwild1@gmail.com>
parents: 11787
diff changeset
146 -- Clear (nil) remainder of range
42b2713ab818 util.array: Take advantage of table.move()
Matthew Wild <mwild1@gmail.com>
parents: 11787
diff changeset
147 t_move(ina, #outa+1, #outa*2, 2+j-i, ina);
11787
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
148 end
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
149 return outa;
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
150 end
3ae6fa901a8b util.array: Add :slice() method + tests
Matthew Wild <mwild1@gmail.com>
parents: 10895
diff changeset
151
1905
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
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parents: 1522
diff changeset
152 function array_base.sort(outa, ina, ...)
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
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parents: 1522
diff changeset
153 if ina ~= outa then
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Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
154 outa:append(ina);
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
155 end
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
156 t_sort(outa, ...);
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
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parents: 1522
diff changeset
157 return outa;
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
158 end
918
967edf874df7 util.array: New array library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
159
8017
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
160 function array_base.unique(outa, ina)
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
161 local seen = {};
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
162 return array_base.filter(outa, ina, function (item)
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
163 if seen[item] then
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
164 return false;
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
165 else
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
166 seen[item] = true;
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
167 return true;
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
168 end
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
169 end);
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
170 end
ec7cab8e744d util.array: Add method for filtering out duplicate values
Kim Alvefur <zash@zash.se>
parents: 7976
diff changeset
171
10895
5777968301e8 util.array: pluck: Support default value to avoid holes
Matthew Wild <mwild1@gmail.com>
parents: 10592
diff changeset
172 function array_base.pluck(outa, ina, key, default)
7019
abcd5ec3ee41 util.array: Fix minory style issues
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
173 for i = 1, #ina do
10895
5777968301e8 util.array: pluck: Support default value to avoid holes
Matthew Wild <mwild1@gmail.com>
parents: 10592
diff changeset
174 local v = ina[i][key];
5777968301e8 util.array: pluck: Support default value to avoid holes
Matthew Wild <mwild1@gmail.com>
parents: 10592
diff changeset
175 if v == nil then
5777968301e8 util.array: pluck: Support default value to avoid holes
Matthew Wild <mwild1@gmail.com>
parents: 10592
diff changeset
176 v = default;
5777968301e8 util.array: pluck: Support default value to avoid holes
Matthew Wild <mwild1@gmail.com>
parents: 10592
diff changeset
177 end
5777968301e8 util.array: pluck: Support default value to avoid holes
Matthew Wild <mwild1@gmail.com>
parents: 10592
diff changeset
178 outa[i] = v;
4439
1c8d2c0d02db util.array: Add pluck() method to pick a given property from each item
Matthew Wild <mwild1@gmail.com>
parents: 4387
diff changeset
179 end
1c8d2c0d02db util.array: Add pluck() method to pick a given property from each item
Matthew Wild <mwild1@gmail.com>
parents: 4387
diff changeset
180 return outa;
1c8d2c0d02db util.array: Add pluck() method to pick a given property from each item
Matthew Wild <mwild1@gmail.com>
parents: 4387
diff changeset
181 end
1c8d2c0d02db util.array: Add pluck() method to pick a given property from each item
Matthew Wild <mwild1@gmail.com>
parents: 4387
diff changeset
182
5857
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
183 function array_base.reverse(outa, ina)
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
184 local len = #ina;
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
185 if ina == outa then
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
186 local middle = math_floor(len/2);
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
187 len = len + 1;
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
188 local o; -- opposite
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
189 for i = 1, middle do
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
190 o = len - i;
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
191 outa[i], outa[o] = outa[o], outa[i];
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
192 end
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
193 else
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
194 local off = len + 1;
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
195 for i = 1, len do
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
196 outa[i] = ina[off - i];
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
197 end
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
198 end
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
199 return outa;
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
200 end
8613888d0f9e util.array: Improve array:reverse() and make it work as both method and non-mutating function
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
201
4440
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
202 --- These methods only mutate the array
7700
0d70410efdcf util.array: Remove unused arguments [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7699
diff changeset
203 function array_methods:shuffle()
918
967edf874df7 util.array: New array library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
204 local len = #self;
7019
abcd5ec3ee41 util.array: Fix minory style issues
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
205 for i = 1, #self do
abcd5ec3ee41 util.array: Fix minory style issues
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
206 local r = math_random(i, len);
918
967edf874df7 util.array: New array library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
207 self[i], self[r] = self[r], self[i];
967edf874df7 util.array: New array library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
208 end
1372
3b13bb57002e util.array: Make array:reverse() and array:shuffle() return the array to allow chaining
Matthew Wild <mwild1@gmail.com>
parents: 1371
diff changeset
209 return self;
918
967edf874df7 util.array: New array library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
210 end
967edf874df7 util.array: New array library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211
7699
9c40d0be2295 util.array: Rename arguments to avoid name clash [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7020
diff changeset
212 function array_methods:append(ina)
12403
42b2713ab818 util.array: Take advantage of table.move()
Matthew Wild <mwild1@gmail.com>
parents: 11787
diff changeset
213 t_move(ina, 1, #ina, #self+1, self);
1371
9e45bdf55353 util.array: Add array:append() method, to append a new array to an existing one
Matthew Wild <mwild1@gmail.com>
parents: 1027
diff changeset
214 return self;
9e45bdf55353 util.array: Add array:append() method, to append a new array to an existing one
Matthew Wild <mwild1@gmail.com>
parents: 1027
diff changeset
215 end
9e45bdf55353 util.array: Add array:append() method, to append a new array to an existing one
Matthew Wild <mwild1@gmail.com>
parents: 1027
diff changeset
216
4440
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
217 function array_methods:push(x)
4449
ca74d8ed1a15 util.array: Avoid globals.
Waqas Hussain <waqas20@gmail.com>
parents: 4448
diff changeset
218 t_insert(self, x);
4448
d745f4c28294 util.array: Make array:push() chainable.
Waqas Hussain <waqas20@gmail.com>
parents: 4440
diff changeset
219 return self;
4440
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
220 end
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
221
7020
6ab9c691c4c6 util.array: Just use table.remove as array:pop()
Kim Alvefur <zash@zash.se>
parents: 7019
diff changeset
222 array_methods.pop = t_remove;
4440
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
223
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
224 function array_methods:concat(sep)
4449
ca74d8ed1a15 util.array: Avoid globals.
Waqas Hussain <waqas20@gmail.com>
parents: 4448
diff changeset
225 return t_concat(array.map(self, tostring), sep);
4440
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
226 end
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
227
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
228 function array_methods:length()
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
229 return #self;
c60ed6732b34 util.array: Expand some of the more basic methods to act more sensibly than their names suggested
Matthew Wild <mwild1@gmail.com>
parents: 4439
diff changeset
230 end
1905
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
231
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
232 --- These methods always create a new array
1027
fe2e3d3dba6a util.array: Add array.collect() to collect results from iterators into an array, and use module() to correctly set the module name
Matthew Wild <mwild1@gmail.com>
parents: 922
diff changeset
233 function array.collect(f, s, var)
4387
06161b0b83f2 util.array: Fix array.collect() for iterators that expect initial value of var to be preserved
Matthew Wild <mwild1@gmail.com>
parents: 3540
diff changeset
234 local t = {};
1027
fe2e3d3dba6a util.array: Add array.collect() to collect results from iterators into an array, and use module() to correctly set the module name
Matthew Wild <mwild1@gmail.com>
parents: 922
diff changeset
235 while true do
fe2e3d3dba6a util.array: Add array.collect() to collect results from iterators into an array, and use module() to correctly set the module name
Matthew Wild <mwild1@gmail.com>
parents: 922
diff changeset
236 var = f(s, var);
7019
abcd5ec3ee41 util.array: Fix minory style issues
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
237 if var == nil then break; end
4449
ca74d8ed1a15 util.array: Avoid globals.
Waqas Hussain <waqas20@gmail.com>
parents: 4448
diff changeset
238 t_insert(t, var);
1027
fe2e3d3dba6a util.array: Add array.collect() to collect results from iterators into an array, and use module() to correctly set the module name
Matthew Wild <mwild1@gmail.com>
parents: 922
diff changeset
239 end
fe2e3d3dba6a util.array: Add array.collect() to collect results from iterators into an array, and use module() to correctly set the module name
Matthew Wild <mwild1@gmail.com>
parents: 922
diff changeset
240 return setmetatable(t, array_mt);
fe2e3d3dba6a util.array: Add array.collect() to collect results from iterators into an array, and use module() to correctly set the module name
Matthew Wild <mwild1@gmail.com>
parents: 922
diff changeset
241 end
fe2e3d3dba6a util.array: Add array.collect() to collect results from iterators into an array, and use module() to correctly set the module name
Matthew Wild <mwild1@gmail.com>
parents: 922
diff changeset
242
1905
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
243 ---
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
244
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
245 -- Setup methods from array_base
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
246 for method, f in pairs(array_base) do
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
247 local base_method = f;
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
248 -- Setup global array method which makes new array
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
249 array[method] = function (old_a, ...)
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
250 local a = new_array();
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
251 return base_method(a, old_a, ...);
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
252 end
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
253 -- Setup per-array (mutating) method
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
254 array_methods[method] = function (self, ...)
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
255 return base_method(self, self, ...);
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
256 end
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
257 end
e3e0a17e0b33 util.array: Per-array methods now always mutate the array, array.* return a mutated copy, and most methods (e.g. sort) now return the array
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
258
1027
fe2e3d3dba6a util.array: Add array.collect() to collect results from iterators into an array, and use module() to correctly set the module name
Matthew Wild <mwild1@gmail.com>
parents: 922
diff changeset
259 return array;