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| lassign(n) | Tcl Built-In Commands | lassign(n) |
NAME
lassign - Assign list elements to variablesSYNOPSIS
lassign list varName ?varName ...?DESCRIPTION
This command treats the value list as a list and assigns successive elements from that list to the variables given by the varName arguments in order. If there are more variable names than list elements, the remaining variables are set to the empty string. If there are more list elements than variables, a list of unassigned elements is returned.EXAMPLES
An illustration of how multiple assignment works, and what happens when there are either too few or too many elements.
lassign {a b c} x y z ;# Empty return
puts $x ;# Prints "a"
puts $y ;# Prints "b"
puts $z ;# Prints "c"
lassign {d e} x y z ;# Empty return
puts $x ;# Prints "d"
puts $y ;# Prints "e"
puts $z ;# Prints ""
lassign {f g h i} x y ;# Returns "h i"
puts $x ;# Prints "f"
puts $y ;# Prints "g"
set ::argv [lassign $::argv argumentToReadOff]
SEE ALSO
lindex(n), list(n), lset(n), set(n)KEYWORDS
assign, element, list, multiple, set, variable| 8.5 | Tcl |
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