newb question... string = @"somestring"

[mp]

why do i find samples containing something like
string fileName = @"C:\somefile"

what is the @ symbol doing in there?



I'm wondering if it has to do with why an equality check returns false on
two identical strings(actually a not equal test returns true when it should
return false)

if (doc.Name != fileName)

returns true when doc.Name and fileName are identical in terms of human
reading (it should return false)



thanks

mark

 

[mp]

why do i find samples containing something like
string fileName = @"C:\somefile"

what is the @ symbol doing in there?

I'd still like to know the above, but the following was my bad reading
ability...there was a capitalization difference

 

[Dylan Parry]

why do i find samples containing something like
string fileName = @"C:\somefile"

what is the @ symbol doing in there?

It's basically there to tell the compiler to treat the string in a
slightly special way because it contains characters that would otherwise
be treated as escape characters. In the above example, it's the "\" that
would have caused the problem if the @ symbol were not present.

The equivalent line without the @ symbol would be:

string fileName = "C:\\somefile"

Notice the extra "\"? This is because on its own, a single backslash
denotes the beginning of an escape sequence, so without the @ symbol
you'd need to double them up.

 

[Registered User]

why do i find samples containing something like
string fileName = @"C:\somefile"

what is the @ symbol doing in there?

http://msdn.microsoft.com/en-us/library/h21280bw.aspx

explains escape sequences. That should explain why in this snippet
s1.Equals(s2) always returns true.

string s1 = @"c:\newfolder";
string s2 = "c:\\newfolder";

if (s1.Equals(s2))
{
...
}

regards
A.G.

 

[mp]

It's basically there to tell the compiler to treat the string in a
slightly special way because it contains characters that would otherwise
be treated as escape characters. In the above example, it's the "\" that
would have caused the problem if the @ symbol were not present.

The equivalent line without the @ symbol would be:

string fileName = "C:\\somefile"

Notice the extra "\"? This is because on its own, a single backslash
denotes the beginning of an escape sequence, so without the @ symbol
you'd need to double them up.

Thanks for the explanation!
mark