string reset? why? how?

[RNEELY]

I've inherited code similar to the following with a comment on resetting the
string. Why would anyone want to do this? How could this reset the string?
What does it mean to reset a string?

Public Sub SetTheStringToS omething(ByRef OutStr As String)
OutStr = "123"
End Sub

Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim s As String
SetTheStringToS omething(s)
Dim sOriginal$ = s
s = sOriginal 'reset the string ' <- why? how?
Debug.WriteLine (s)
Debug.WriteLine (sOriginal)
End Sub
--
Regards,
-Ron

[Cor Ligthert [MVP]]

Re: string reset? why? how?

RNeely,

To make his program unreadable for his coworkers and to make himself very
interesting.

Cor

"RNEELY" <RNEELY@discuss ions.microsoft. comschreef in bericht
news:7F7E56F0-4E91-497D-939A-CAA333076329@mi crosoft.com...

I've inherited code similar to the following with a comment on resetting
the
string. Why would anyone want to do this? How could this reset the
string?
What does it mean to reset a string?
>
Public Sub SetTheStringToS omething(ByRef OutStr As String)
OutStr = "123"
End Sub
>
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim s As String
SetTheStringToS omething(s)
Dim sOriginal$ = s
s = sOriginal 'reset the string ' <- why? how?
Debug.WriteLine (s)
Debug.WriteLine (sOriginal)
End Sub
--
Regards,
-Ron
>

[tomb]

Re: string reset? why? how?

Ron,
There could be any number of reasons someone would want to reset a
string, which only means putting it back to its original value.
If the string is used as a global variable that must default to a
certain value, but utilized to temporarily hold a new value that is
referenced somewhere else, then you would want to reset it after it is
referenced.
But, as Cor so eloquently pointed out, the example code is total
nonsense. Is this a true representation of the code in question?

Tom

RNEELY wrote:

>I've inherited code similar to the following with a comment on resetting the
>string. Why would anyone want to do this? How could this reset the string?
>What does it mean to reset a string?
>
Public Sub SetTheStringToS omething(ByRef OutStr As String)
OutStr = "123"
End Sub
>
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
>System.EventAr gs) Handles MyBase.Load
Dim s As String
SetTheStringToS omething(s)
Dim sOriginal$ = s
s = sOriginal 'reset the string ' <- why? how?
Debug.WriteLine (s)
Debug.WriteLine (sOriginal)
End Sub
>
>

[RNEELY]

Re: string reset? why? how?

Yes, the representation is accurate. Thanks for the sanity check. The
assignment of s = sOriginal seems superfluous because it is superfluous.
Don't know if this code was perhaps cut and pasted from inside a for loop?
Doesn't matter. It is still superfluous.
--
Regards,
-Ron



"tomb" wrote:

Ron,
There could be any number of reasons someone would want to reset a
string, which only means putting it back to its original value.
If the string is used as a global variable that must default to a
certain value, but utilized to temporarily hold a new value that is
referenced somewhere else, then you would want to reset it after it is
referenced.
But, as Cor so eloquently pointed out, the example code is total
nonsense. Is this a true representation of the code in question?
>
Tom
>
RNEELY wrote:
>

I've inherited code similar to the following with a comment on resetting the
string. Why would anyone want to do this? How could this reset the string?
What does it mean to reset a string?

Public Sub SetTheStringToS omething(ByRef OutStr As String)
OutStr = "123"
End Sub

Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim s As String
SetTheStringToS omething(s)
Dim sOriginal$ = s
s = sOriginal 'reset the string ' <- why? how?
Debug.WriteLine (s)
Debug.WriteLine (sOriginal)
End Sub

>

[Herfried K. Wagner [MVP]]

Re: string reset? why? how?

"RNEELY" <RNEELY@discuss ions.microsoft. comschrieb:

I've inherited code similar to the following with a comment on resetting
the
string. Why would anyone want to do this? How could this reset the
string?
What does it mean to reset a string?
>
Public Sub SetTheStringToS omething(ByRef OutStr As String)
OutStr = "123"
End Sub
>
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim s As String
SetTheStringToS omething(s)
Dim sOriginal$ = s
s = sOriginal 'reset the string ' <- why? how?
Debug.WriteLine (s)
Debug.WriteLine (sOriginal)

's' and 'sOriginal' always contain the same value because 'sOriginal' is set
to the value of 's' and the value gets reassigned to 's'. I suggest to
remove 'sOriginal'.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>

[tommaso.gastaldi@uniroma1.it]

Re: string reset? why? how?


tomb ha scritto:

Ron,
There could be any number of reasons someone would want to reset a
string, which only means putting it back to its original value.
If the string is used as a global variable that must default to a
certain value, but utilized to temporarily hold a new value that is
referenced somewhere else, then you would want to reset it after it is
referenced.

perhaps they meant:

Dim s As String = Nothing
Dim sOriginal = s
SetTheStringToS omething(s)

s = sOriginal 'reset the string ' <- why? how?

Debug.WriteLine (s)
Debug.WriteLine (sOriginal)

But, as Cor so eloquently pointed out, the example code is total
nonsense. Is this a true representation of the code in question?
>
Tom
>
RNEELY wrote:
>

I've inherited code similar to the following with a comment on resetting the
string. Why would anyone want to do this? How could this reset the string?
What does it mean to reset a string?

Public Sub SetTheStringToS omething(ByRef OutStr As String)
OutStr = "123"
End Sub

Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim s As String
SetTheStringToS omething(s)
Dim sOriginal$ = s
s = sOriginal 'reset the string ' <- why? how?
Debug.WriteLine (s)
Debug.WriteLine (sOriginal)
End Sub

[Phill W.]

Re: string reset? why? how?

RNEELY wrote:

I've inherited code similar to the following with a comment on resetting the
string. Why would anyone want to do this? How could this reset the string?
What does it mean to reset a string?
>
Public Sub SetTheStringToS omething(ByRef OutStr As String)
OutStr = "123"
End Sub
>
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim s As String
SetTheStringToS omething(s)
Dim sOriginal$ = s
s = sOriginal 'reset the string ' <- why? how?
Debug.WriteLine (s)
Debug.WriteLine (sOriginal)
End Sub

Another possiblity for you.
This may be a hang-over from a [much] earlier VB Type-ing problem.

If the Sub's /original/ declaration were

Public Sub SetTheStringToS omething(ByRef OutStr)

Then (in VB) it would return a Variant /containing/ a String (and in
VB.Net an /Object/ containing a String).

Since sOriginal$ is explicitly Typed as a $tring, this may be an attempt
to /remove/ the Variant wrapper and get the value back in to a proper
String variable.

Regards,
Phill W.