v		input view
cols...		column list

Project returns a view with columns cols... from v in the specified order. Duplicate rows are omitted, unlike {colmap}.

set v [view {A B} def {1 a 1 b 1 b 2 c 3 c}]

view $v project A

	A
0	1
1	2
2	3

view $v project B

	B
0	a
1	b
2	c

view $v project A B

	A	B
0	1	a
1	1	b
2	2	c
3	3	c

view $v project

0

(project is defined in Ratcl)