: '''namespace which''' ''?-'''''command'''''? ?-'''''variable'''''? name''
Looks up ''name'' as either a command or variable and returns its fully-qualified name. For example, if ''name'' does not exist in the current namespace but does exist in the global namespace, this command returns a fully-qualified name in the global namespace. If the command or variable does not exist, this command returns an empty string. If the variable has been created but not defined, such as with the '''[variable]''' command or through a '''[trace]''' on the variable, this command will return the fully-qualified name of the variable. If no flag is given, ''name'' is treated as a command name. See the section NAME RESOLUTION on [namespace] for an explanation of the rules regarding name resolution.
<<discussion>> namespace which for array elements
2010-06-09 [HaO]
For me, it was surprising that
======
[namespace which -variable array(element)]
======
always returns the empty string, even if
======
info exists array(element)
======
returns true (e.g. the array element exists).
One might use for array elements:
======[namespace which -variable array](Indexlement)
======
which works but is IMHO nor beautiful, robust or optimizeable by the byte code compiler.
[MS] points to [https://core.tcl.tk/tcl/tktview?name=472113%|%TCL Ticket 472113%|%]
----
<<discussion>>
**See also**
* [namespace]
<<categories>> Command | Tcl syntax help