Object's scope

hello.

please me understand scoping in case of powershell objects. here sample script:

##################################

########## begin script ##########

$global:obj = new-object psobject

add-member -inputobject $obj -membertype noteproperty -name "var" -value "object value"

[string]$global:str = "string value"

function setnewvalues {

   "in setnewvalues before change `$obj.var = '{0}'" -f $obj.var

   "in setnewvalues before change `$str = '{0}'" -f $str

   $obj.var = "new object value"

   $str = "new string value"

   "in setnewvalues after change `$obj.var = '{0}'" -f $obj.var

   "in setnewvalues after change `$str = '{0}'" -f $str

}

"before setnewvalues `$obj.var = '{0}'" -f $obj.var

"before setnewvalues `$str = '{0}'" -f $str

setnewvalues

"after setnewvalues `$obj.var = '{0}'" -f $obj.var

"after setnewvalues `$str = '{0}'" -f $str

########### end script ###########

##################################

and here script output:

#########################################

########## begin script output ##########

before setnewvalues $obj.var = 'object value'

before setnewvalues $str = 'string value'

in setnewvalues before change $obj.var = 'object value'

in setnewvalues before change $str = 'string value'

in setnewvalues after change $obj.var = 'new object value'

in setnewvalues after change $str = 'new string value'

after setnewvalues $obj.var = 'new object value'

after setnewvalues $str = 'string value'

########### end script output ###########

#########################################

so see not necessary specify scope modifier objects explicitly.

it looks default scope object scope in created. correct?

i want know, if following assertion objects psobject true: powershell use object highest parent scope, if there 1 object given name in scopes. , in case don't need specify scope explicitly.

in case of "simple" objects (like strings) not true, because powershell create new variable in child scope implicitly. please see example script , it's result - when function completed variable $str in parent (global) scope remains untouched. property $obj.var changed, although change them both without $global: scope modifier.

Windows Server  >  Windows PowerShell