Details
-
Type:
Story
-
Status: Open
-
Priority:
(None)
-
Resolution: Unresolved
-
Affects Version/s: None
-
Fix Version/s: None
-
Component/s: Built-in functions
-
Labels:None
Description
It would be nice if I could easily get a list of unique elements from more than one list.
Currently I need to join my lists together before finding unique elements:
Unique entries from two lists
bundle agent __main__
{
vars:
"a" slist => { "1", "2", "3" };
"b" slist => { "3", "4", "5" };
"ab" slist => { @(a), @(b) };
"u" slist => unique( @(ab) );
reports:
"$(u)";
}
R: 1 R: 2 R: 3 R: 4 R: 5
Implementation Suggestions
I think it would be reasonable to extend unique() to take N arguments.
bundle agent __main__
{
vars:
"a" slist => { "1", "2", "3" };
"b" slist => { "3", "4", "5" };
"u" slist => unique( @(a), @(b) );
reports:
"$(u)";
}
I think it would also be reasonable to extend unique() into a collecting function allowing it to take data containers.
bundle agent __main__
{
vars:
"a" slist => { "1", "2", "3" };
"b" slist => { "3", "4", "5" };
"u" slist => unique( mergedata( @(a), @(b) ) );
reports:
"$(u)";
}
