table expand fast with rules ...

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Function Names

table expand fast with rules, table expand fast with rules ignore case

Description

This function combines the lookup strategy from table expand with rules() with the data integration features of table expand fast() where the additional rows are added at the end of the table to get the job done more quickly.

Call as: procedure or function

Restrictions

Indirect parameter passing is disabled

Parameter count

6 - 9 (For parameter description and return values: see table expand() )

Examples


  table initialize( animals,
      { { Name,      Size,     Speed,     Movement,  Leg count,  Surface,    Special Skills   },
        { Parrot,    small,    50,        flying,    2,          feathers,   immitates voices },
        { Dog,       small,    30,        walking,   4,          hair,       sense of smell   },
        { Cat,       small,    20,        walking,   4,          hair,       night vision     },
        { Fox,       small,    25,        walking,   4,          hair,       relatively smart },
        { Owl,       small,    80,        flying,    2,          feathers,   night vision     },
        { Worm,      tiny,     0.01,      crawling,  0,          mucous skin,unclear          },
        { Whale,     huge,     30,        swimming,  0,          skin,       relatively smart } } );

  headers[] = [animals:..,0]-{Name};


  table initialize( target,
          { { Size,     Speed,     Movement,  Leg count,  Surface, Special Skills, Animal, Double Speed   },
            { '*',      ':mod([.],40)=0','*', '*',        '*',     '*',          "It's an", 2  }, // Speed divisible by 40 -> Owl
            { small,    '20..30',  '*',       '*',        Hair,    '*',          "It's a ", 2   }, // Dog, Cat, Fox
            { small,    '20..30',  '*',       '*',        Hair,    '*',          "It's a ", 2   }, // "
            { small,    '20..30',  '*',       '*',        Hair,    '*',          "It's a ", 2   }, // "
            { '*',      '<1',      '*',       '*',        '*',     '*',          "",        2   } } );

  count[] = table expand fast with rules ignore case ( target, headers[],  {Animal, Movement, Double Speed},
                                        animals, headers[], {Name,   Movement, Speed},   { append with space, overwrite, mul }, true, Counter );
  // Data integration process: Overwrite movement in target table, Add animal name to 'It's ...' and note double speed.

  echo("List of animals with counted lookups:");
  table list( animals );

  echo("Target table after lookup (", count[], " items found):");
  table list( target );

Output

List of animals with counted lookups:
    0 : Name   | Size  | Speed | Movement | Leg count | Surface     | Special Skills   | Counter
    1 : Parrot | small | 50    | flying   | 2         | feathers    | immitates voices |        
    2 : Dog    | small | 30    | walking  | 4         | hair        | sense of smell   | 3      
    3 : Cat    | small | 20    | walking  | 4         | hair        | night vision     | 3      
    4 : Fox    | small | 25    | walking  | 4         | hair        | relatively smart | 3      
    5 : Owl    | small | 80    | flying   | 2         | feathers    | night vision     | 1      
    6 : Worm   | tiny  | 0.01  | crawling | 0         | mucous skin | unclear          | 1      
    7 : Whale  | huge  | 30    | swimming | 0         | skin        | relatively smart |        

Target table after lookup (11 items found):
    0 : Size  | Speed          | Movement | Leg count | Surface | Special Skills | Animal      | Double Speed
    1 : *     | :mod([.],40)=0 | flying   | *         | *       | *              | It's an Owl | 160         
    2 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Dog | 60          
    3 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Dog | 60          
    4 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Dog | 60          
    5 : *     | <1             | crawling | *         | *       | *              | Worm        | 0.02        
    6 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Cat | 40          
    7 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Fox | 50          
    8 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Cat | 40          
    9 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Fox | 50          
   10 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Cat | 40          
   11 : small | 20..30         | walking  | *         | Hair    | *              | It's a  Fox | 50          

Try it yourself: Open LIB_Function_table_expand_fast_with_rules.b4p in B4P_Examples.zip. Decompress before use.

See also

table expand fast with rules once
table expand fast smart
table expand fast
table expand with rules