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#
# utils.tcl
#
proc array_to_list {obj elem} {
upvar #0 $obj ar
set i $ar($elem)
set out {}
for {set j 0} {$j < $i} {incr j} {
lappend out "$obj\($elem,$j)"
}
return $out
}
#
# returns subset of list - no index checking!
#
# usage: array_to_listvalues Prop Choices
# array_to_listvalues Prop Choices first last
#
proc array_to_listvalues {obj elem args} {
upvar #0 $obj ar
set i $ar($elem)
set out {}
if { [llength $args] > 1} {
set j [lindex $args 0]
set i [lindex $args 1]
incr i
} {
set j 0
set i $ar($elem)
}
while {$j < $i} {
lappend out $ar($elem,$j)
incr j
}
return $out
}
proc drop_last_element {ll} {
set len [expr [llength $ll] - 2]
if {$len < 0} {
return {}
} else {
return [lrange $ll 0 $len]
}
}
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