RE: [TCLCORE] TIP #269: Add 'string is list' to the 'string is' Subcommand

[Reinhard M. <ma...@tc...>]

Hi,

On Mon, 22 May 2006 at 11:03, Jeff Hobbs wrote:

> and since this only serves the purpose of determining if input read 
> into Tcl may possibly be an invalid list, [...] 

an empty list is not invalid.

> old	if {![catch {llength $line} len] && $len} { ...
> new	if {[string is list -strict $line]} { ...

if {[string is list $line] && [llength $line] > 0} { ...

... in the good old tradition of Tcl to be explicit.


cu
	Reinhard