Multiple distinct objects: Difference between revisions

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 =={{header|Lua}}==
-This concept is relevant to tables in Lua
+<lang Lua>-- This concept is relevant to tables in Lua
-<lang Lua>local table1 = {1,2,3}</lang>
+local table1 = {1,2,3}
-The following will create a table of references to table1
+-- The following will create a table of references to table1
+local refTab = {}
-<lang Lua>function nRefs (t, n)
-    local refTab = {}
+for i = 1, 10 do refTab[i] = table1 end
-    for i = 1, 10 do refTab[n] = t end
-    return refTab
-end
+-- Instead, tables should be copied using a function like this
-local mistake = nRefs(table1, 10)</lang>
+function copy (t)
-Instead, tables should be copied using a function like this
-<lang Lua>function copy (t)
     local new = {}
     for k, v in pairs(t) do new[k] = v end
     return new
-end</lang>
-Now we can create a table of independent copies of table1
-<lang Lua>function nCopies (t, n)
-    local copyTab = {}
-    for i = 1, 10 do copyTab[i] = copy(table1) end
-    return copyTab
 end
+-- Now we can create a table of independent copies of table1
-local tableOfTables = nCopies(table1, 10)</lang>
+local copyTab = {}
+for i = 1, 10 do copyTab[i] = copy(table1) end</lang>
 =={{header|Mathematica}}==