D
Domac
What is the difference between "+" and "&" operator when joining strings?
Thanx!
Thanx!
H
Herfried K. Wagner [MVP]
Domac said:
Did you already read the documentation on these operators?
T
Ted Harrison
Not much difference when joining two real strings.
"aaa" + "bbb" would give the same result as "aaa" & "bbb" i.e. "aaabbb"
However, if one expression is a number and one a string then things are
less clear...
"5" + 10 will give the number 15. The "5" is converted to a number "on the
fly".
Whereas "5" & 10 will give the string "510". The 10 is converted to a
string "on the fly".
+ should really only be used to add numbers, and & should be used to
concatenate strings.
D
Domac
Thanks a lot!
P
Phill W.
Domac said:
With "Option Strict On" - none at all.
With "Option Strict Off" and joining only Strings - none at all.
With "Option Strict Off" and joining Strings and /other/ data types -
the effects can be "interesting" ...
HTH,
Phill W.
B
Brian Tkatch
Phill said:
Except that you can do += but not &=.
B.
D
Dick Sutton
I use &= in assignment statements all the time. For example:
strHTML &= MonthName(CInt(sMonth), False) & " - " & sYear &
"</h3></center><br>"
Hope this helps...
Dick
strHTML &= MonthName(CInt(sMonth), False) & " - " & sYear &
"</h3></center><br>"
Hope this helps...
Dick
B
Brian Tkatch
Dick said:
OK, i see, my mistake. Thanks for the correction.
I quickly tested it out by opening a module and typing:
Sub a()
Dim a As String
a+=a
a&=a
End Sub
The editor separated a+=a into a += a, but it separated a&=a to a& = a
and underlined a& as an error. Which i assumed (incorrectly) that &=
was not supported.
So, perhaps a difference is whether the editor put in that space before
the operator. With = is does, with & it does not. Well, nothing too
important.
Thanx for the correction.
B.
M
Miro
Excellent Answer.
Short, sweet, and most important a simple example.
I didnt know why either, till i seen this post.
Miro
- Learning VB Net
Short, sweet, and most important a simple example.
I didnt know why either, till i seen this post.
Miro
- Learning VB Net
?
=?ISO-8859-1?Q?G=F6ran_Andersson?=
Brian said:OK, i see, my mistake. Thanks for the correction.
I quickly tested it out by opening a module and typing:
Sub a()
Dim a As String
a+=a
a&=a
End Sub
The editor separated a+=a into a += a, but it separated a&=a to a& = a
and underlined a& as an error. Which i assumed (incorrectly) that &=
was not supported.
So, perhaps a difference is whether the editor put in that space before
the operator. With = is does, with & it does not. Well, nothing too
important.
Thanx for the correction.
B.
That is Basic Baggage. The & character once had a meaning at the end of
a variable name. The interpreter still recognises this, but it doesn't
work any more.
G
Guest
i dont know about myvar& not working but myvar% still does,
it still documented as working too
guy
it still documented as working too
guy
J
Jay B. Harlow [MVP - Outlook]
Göran
| That is Basic Baggage. The & character once had a meaning at the end of
| a variable name. The interpreter still recognises this, but it doesn't
| work any more.
As Guy suggests whatever& still works in both .NET 1.x & .NET 2.0.
For example:
Dim whatever&
is short hand for:
Dim whatever As Long
For details see:
http://msdn2.microsoft.com/en-us/library/s9cz43ek.aspx
However I don't recommend using it, as only a very small subset of types are
supported...
--
Hope this helps
Jay B. Harlow [MVP - Outlook]
..NET Application Architect, Enthusiast, & Evangelist
T.S. Bradley - http://www.tsbradley.net
| Brian Tkatch wrote:
| > Dick Sutton wrote:
| >> I use &= in assignment statements all the time. For example:
| >>
| >> strHTML &= MonthName(CInt(sMonth), False) & " - " & sYear &
| >> "</h3></center><br>"
| >>
| >> Hope this helps...
| >>
| >> Dick
| >>
| >> | >>> Phill W. wrote:
| >>>> Domac wrote:
| >>>>> What is the difference between "+" and "&" operator when joining
| >>>>> strings?
| >>>> With "Option Strict On" - none at all.
| >>>>
| >>>> With "Option Strict Off" and joining only Strings - none at all.
| >>>>
| >>>> With "Option Strict Off" and joining Strings and /other/ data types -
| >>>> the effects can be "interesting" ...
| >>>>
| >>>> HTH,
| >>>> Phill W.
| >>> Except that you can do += but not &=.
| >>>
| >>> B.
| >>>
| >
| > OK, i see, my mistake. Thanks for the correction.
| >
| > I quickly tested it out by opening a module and typing:
| >
| > Sub a()
| > Dim a As String
| > a+=a
| > a&=a
| > End Sub
| >
| > The editor separated a+=a into a += a, but it separated a&=a to a& = a
| > and underlined a& as an error. Which i assumed (incorrectly) that &=
| > was not supported.
| >
| > So, perhaps a difference is whether the editor put in that space before
| > the operator. With = is does, with & it does not. Well, nothing too
| > important.
| >
| > Thanx for the correction.
| >
| > B.
| >
|
| That is Basic Baggage. The & character once had a meaning at the end of
| a variable name. The interpreter still recognises this, but it doesn't
| work any more.
| That is Basic Baggage. The & character once had a meaning at the end of
| a variable name. The interpreter still recognises this, but it doesn't
| work any more.
As Guy suggests whatever& still works in both .NET 1.x & .NET 2.0.
For example:
Dim whatever&
is short hand for:
Dim whatever As Long
For details see:
http://msdn2.microsoft.com/en-us/library/s9cz43ek.aspx
However I don't recommend using it, as only a very small subset of types are
supported...
--
Hope this helps
Jay B. Harlow [MVP - Outlook]
..NET Application Architect, Enthusiast, & Evangelist
T.S. Bradley - http://www.tsbradley.net
| Brian Tkatch wrote:
| > Dick Sutton wrote:
| >> I use &= in assignment statements all the time. For example:
| >>
| >> strHTML &= MonthName(CInt(sMonth), False) & " - " & sYear &
| >> "</h3></center><br>"
| >>
| >> Hope this helps...
| >>
| >> Dick
| >>
| >> | >>> Phill W. wrote:
| >>>> Domac wrote:
| >>>>> What is the difference between "+" and "&" operator when joining
| >>>>> strings?
| >>>> With "Option Strict On" - none at all.
| >>>>
| >>>> With "Option Strict Off" and joining only Strings - none at all.
| >>>>
| >>>> With "Option Strict Off" and joining Strings and /other/ data types -
| >>>> the effects can be "interesting" ...
| >>>>
| >>>> HTH,
| >>>> Phill W.
| >>> Except that you can do += but not &=.
| >>>
| >>> B.
| >>>
| >
| > OK, i see, my mistake. Thanks for the correction.
| >
| > I quickly tested it out by opening a module and typing:
| >
| > Sub a()
| > Dim a As String
| > a+=a
| > a&=a
| > End Sub
| >
| > The editor separated a+=a into a += a, but it separated a&=a to a& = a
| > and underlined a& as an error. Which i assumed (incorrectly) that &=
| > was not supported.
| >
| > So, perhaps a difference is whether the editor put in that space before
| > the operator. With = is does, with & it does not. Well, nothing too
| > important.
| >
| > Thanx for the correction.
| >
| > B.
| >
|
| That is Basic Baggage. The & character once had a meaning at the end of
| a variable name. The interpreter still recognises this, but it doesn't
| work any more.
?
=?ISO-8859-1?Q?G=F6ran_Andersson?=
Jay said:
Oh, so it still works, even?
Why didn't they get rid of that? They had the chance when they created
VB.NET, now it's gonna haunt the VB language for ever...