Description
Returns a string of the concatenated values in an input bag (array).
Syntax
xplenty_rb.concat_bag(bag,separator,lambda_expression)
Arguments
bag - bag.
separator - string to insert between the concatenated values. Can be an empty string or null
lambda_expression - Ruby compliant expression to manipulate the bag prior to concatenation, such as sort or filter.
Examples
bag1 is [(a),(c),(b)]
xplenty_rb.concat_bag(bag1, '-', '|bag| bag.sort_by { |tuple| tuple.last }') returns the string a-b-c.
* The inner lambda expression is required because the bag actually contains tuples (manifested as arrays) of fields - in this case, arrays of a single element.
Return value datatype
String.
Impact of null value
If input bag is null, returns null.
If the lambda expression is erroneous, the function fails.
