How to use JSL to repeat a sequence to the end of a data table?

[#1]

I have a set sequence that I want to repeat to the end of a data table like you can do with the "Fill to End of Column" when you select rows where this can go on for an unspecified number of rows

I'm using the following:

NewColumn("Part", Character, Values({"1-B","1-B","1-B","1-D","1-D","1-D",
  "1-F","1-F","1-F","1-H","1-H","1-H","1-J","1-J","1-J","1-L","1-L","1-L",
  "2-B","2-B","2-B","2-D","2-D","2-D",
  "2-F","2-F","2-F","2-H","2-H","2-H","2-J","2-J","2-J","2-L","2-L","2-L"}
));

[#2 · Accepted solution]

Try Repeat().

Two examples:

seq = {"1-B", "1-B", "1-B", "1-D", "1-D", "1-D", "1-F", "1-F", "1-F", "1-H", "1-H", "1-H", "1-J", "1-J", "1-J",
"1-L", "1-L", "1-L", "2-B", "2-B", "2-B", "2-D", "2-D", "2-D", "2-F", "2-F", "2-F", "2-H", "2-H", "2-H", "2-J",
"2-J", "2-J", "2-L", "2-L", "2-L"};
// Repeat sequence a predefined number of times
New Table( "example 2", New Column( "Part", Character, Values( Repeat( seq, 5 ) ) ) );
// Repeat sequence to fit an existing table
dt = New Table( "example", <<add rows( 400 ) );
dt << New Column( "Part",
  Character,
  Values(
  Repeat( seq, Floor( N Rows( dt ) / N Items( seq ) ) ) || seq[1 :: Mod( N Rows( dt ), N Items( seq ) )]
  )
);