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NAME
namespace -
SYNOPSIS
namespace ?option? ?arg ...?
_________________________________________________________________
DESCRIPTION
namespace WHAT IS A NAMESPACE? () option option
namespace children ?namespace? ?pattern?
namespace namespace(fully-qualified) :: pattern : ::
namespace ()
namespace code script
script (Capture) script namespace inscope script (
namespace code) script ::a::b set script [namespace code
{foo bar}] eval "$script x y" ( script ) namespace eval
::a::b {foo bar x y} Tk (scoped)SCOPED VALUES ()
namespace current
() ::
namespace delete ?namespace namespace ...?
namespace
namespace eval namespace arg ?arg ...?
namespace arg eval
namespace
namespace export ?-clear? ?pattern pattern ...?
namespace import namespace export () pattern () pattern
-clear pattern patterns -clear
namespace forget ?pattern pattern ...?
pattern foo::x a::b::p* :: pattern namespace import
namespace import ?-force? ?pattern pattern ...?
patternfoo::x a::p* pattern -force namespace import
(snapshot): () namespace import ()
namespace inscope namespace arg ?arg ...?
namespace code Tk lappendnamespace inscope namespace eval
namespace inscope ::foo a x y z namespace eval ::foo [concat a
[list x y z]] lappend>
namespace origin command
command a, b,...,n a command(command)
namespace parent ?namespace?
namespace namespace
namespace qualifiers string
string :: string ::foo::bar::x ::foo::bar :: namespace tail
namespace tail string
:: string ::foo::bar::x x :: namespace qualifiers
namespace which ?-command? ?-variable? name
name name variable trace()nameNAME RESOLUTION ()
WHAT IS A NAMESPACE?
(collection)Tcl global namespace ()namespace eval
namespace eval Counter {
namespace export bump
variable num 0
proc bump {} {
variable num
incr num
}
}
num bump bump Counter bump
Tcl variable
namespace eval(over time):
namespace eval Counter {
variable num 0
proc bump {} {
variable num
return [incr num]
}
}
namespace eval Counter {
proc test {args} {
return $args
}
}
namespace eval Counter {
rename test ""
}
Counter test rename
QUALIFIED NAMES
history ::safe::interp :: / . (qualified) Unix Tk () ::
::safe::interp::create ::safe interp create::safe ::
Counter :
Counter::bump 5
Counter::Reset
count ():
puts "count = $Counter::num"
Foo Counter bump :
Foo::Counter::bump 3
Foo:
proc Foo::Test {args} {return $args}
:
rename Foo::Test Bar::Test
(cover) :: : : :: {} ::
NAME
Tcl setprocrename interp alias :: :: ()Tcl :
,
set traceLevel 0
namespace eval Debug {
printTrace $traceLevel
}
Tcl Debug traceLevel printTrace:
set traceLevel 0
namespace eval Foo {
variable traceLevel 3
namespace eval Debug {
printTrace $traceLevel
}
}
Tcl Foo::Debug traceLevelTcl Foo::traceLevel
namespace which :
namespace eval Foo::Debug {namespace which -variable traceLevel}
::traceLevel
namespace eval Foo {namespace which -variable traceLevel}
::Foo::traceLevel.
:: namespace eval
Tcl
variable global global variable
IMPORTING COMMANDS
BLT Blt :
Blt::graph .g -background red
Blt::table . .g 0,0
graph table Blt:::
namespace import Blt::*
Blt:
graph .g -background red
table . .g 0,0
namespace import namespace export
namespace import Blt::graph Blt::table
graph table
()(reissue) namespace import(pick up) -force (overwritten):
namespace import -force Blt::graph Blt::table
namespace forget :
namespace forget Blt::*
Blt Blt Blt::
():
rename Blt::graph ""
EXPORTING COMMANDS
:
namespace eval Counter {
namespace export bump reset
variable Num 0
variable Max 100
proc bump {{by 1}} {
variable Num
incr Num $by
Check
return $Num
}
proc reset {} {
variable Num
set Num 0
}
proc Check {} {
variable Num
variable Max
if {$Num > $Max} {
error "too high!"
}
}
}
bump reset Counter :
namespace import Counter::*
Check
namespace importnamespace export namespace import
SEE ALSO
variable(n)
KEYWORDS
exported, internal, variable
[]
[]
2001/10/12
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