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comparison util/set.lua @ 12986:895a82c5d8d4

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util.set: Add a serialization preparation metamethod Enables util.serialization to turn Sets into a representation that can be deserialized with an environment trick, i.e. `set{"a","b"}`. Also useful for debug purposes.
author Kim Alvefur <zash@zash.se>
date Sun, 26 Mar 2023 13:07:20 +0200
parents 1ceee8becb1a
children a863e4237b91
comparison
equal deleted inserted replaced
12985:c0e3e0d79574 12986:895a82c5d8d4
186 for item in pairs(items) do 186 for item in pairs(items) do
187 s[#s+1] = tostring(item); 187 s[#s+1] = tostring(item);
188 end 188 end
189 return t_concat(s, ", "); 189 return t_concat(s, ", ");
190 end 190 end
191
192 function set_mt.__freeze(set)
193 local s = {};
194 for item in pairs(set._items) do
195 s[#s + 1] = item;
196 end
197 return s;
198 end
199
191 200
192 return { 201 return {
193 new = new; 202 new = new;
194 is_set = is_set; 203 is_set = is_set;
195 union = union; 204 union = union;