length_bool_map

The length_bool_map function yields the number of elements contained in a BOOL MAP.

 length_bool_map ( MAP_to_be_counted )

The function returns NUMBER, which is the number of elements stored in the map.

This function has one parameter:

MAP_to_be_counted, MAP of type BOOL. A MAP of which the number of elements is counted.

An example is provided here.

MAP BOOL test_map 

ASSIGN test_map ["first"] := TRUE
ASSIGN test_map ["second"] := FALSE
ASSIGN test_map ["third"] := TRUE
ASSIGN test_map ["fourth"] := TRUE
ASSIGN test_map ["fifth"] := FALSE
NUMBER length_function_result 

ASSIGN length_function_result := length_bool_map (test_map) 

#
@(length_function_result)
#

If you refer to an MAP element, it results in the creation of that element. The element is created with a default value: 0 for NUMBER, "" for TEXT, and FALSE for BOOL. For example, the test IF testing[1] THEN FI will result in the creation of element 1 in MAP testing.