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--- calc_lookup_table_difference [2015/10/13 20:21]
admin
+++ calc_lookup_table_difference [2026/08/28 03:11] (current)
hermann Sync from local documentation review
@@ Line 1: / Line 1: @@
 ====== Calc Lookup Table Difference ======
 ===== Description =====
-This functor calculates a lookup table that corresponds to the difference between two lookup tables.
+Calculates the difference between two lookup tables.
 ===== Inputs =====
@@ Line 14: / Line 14: @@
 ^ Name  ^ Type  ^ Description  ^ Default Value  ^
-| use Symmetrical Difference  | [[Boolean Value Type]]  | If true, the symmetrical difference between two lookup tables is calculated; otherwise, the relative complement is used.  | True  |
+| Use Symmetrical Difference  | [[Boolean Value Type]]  | If true, the symmetrical difference between First Table and Second Table is calculated, keeping the keys present in only one of the two tables; if false, the relative complement is calculated instead, keeping only the keys of First Table that do not occur in Second Table.  | False  |
-===== Output =====
+===== Outputs =====
 ^ Name  ^ Type  ^ Description  ^
-| result   | [[Lookup Table Type]]  | The resulting lookup table.  |
+| Result  | [[Lookup Table Type]]  | The resulting lookup table.  |
 ===== Group =====
-[[Functor List#Table | Table]]
+[[Functor List#Lookup Table | Lookup Table]]
 ===== Notes =====
-The column names from the first input table are assigned to the output table.
+The key and value column names of Result are inherited from First Table.
-For further information about difference between two sets, see [[wp>Difference_(set_theory)]] and [[wp>Symmetric_difference]].
+For background on the two set operations this functor can compute, see [[https://en.wikipedia.org/wiki/Complement_(set_theory)#Relative_complement|relative complement]] and [[https://en.wikipedia.org/wiki/Symmetric_difference|symmetric difference]].
 ===== Internal Name =====