f::unzip (public)

 f::unzip xs

Defined in packages/acs-tcl/tcl/ad-functional-procs.tcl

Unzip takes a list of tuples {x1 y1} {x2 y2} {x3 y3} ... and returns a tuple of lists {x1 x2 x3 ...} {y1 y2 y3 ...}. It is just a special case of the function "transpose" and is here just for completeness.

Parameters:

xs (required)

Partial Call Graph (max 5 caller/called nodes):

Testcases:

functional_api

Source code:

    set left {}
    set right {}
    foreach x $xs {
        # assertion: x is a tuple
        lappend left [lindex $x 0]
        lappend right [lindex $x 1]
    }
    return [list $left $right]

XQL Not present:

Generic, PostgreSQL, Oracle