Version 21 of Creating Commands

Updated 2010-04-20 11:50:22 by CMcC

Tcl provides several commands which create commands and contexts within which scripts can be evaluated:

• [proc]
• [apply] creates an anonymous command
• [interp create] creates a named slave interp command
• [interp alias] creates a named alias to another command
• [thread create] creates an opaque token associated with a thread
• [namespace ensemble] creates a namespace command from a namespace
• [class create] creates a named class command
• [$class create] creates an opaquely named object instance command
• [coroutine] creates a named coroutine command

generator	cmd?	#args	invocation	destructor	rename?
proc	yes	any	by name		yes
apply	no	any	by reference	implicit	no
interp create	yes	any	interp eval	$interp destroy	yes
interp alias	yes	any	by name		no
thread create	no	any	thread send		no
namespace ensemble	yes	any	by name	namespace delete	yes
class create	yes	any	by name		no
$class create	yes	any	by name	$obj destroy	yes
coroutine	yes	one	by name	return	yes

key:

generator	what generates an instance of this form?
cmd?	does this form construct a command?
#args	how many args does this form take?
invocation	how is this form invoked?
destructor	what explicit destructor disposes of this form?
rename?	does rename destroy this form?

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