Why is there no Char.Empty like String.Empty?
There's no such thing as an empty char. The closest you can get is '\0'
, the Unicode "null" character. Given that you can embed that within string literals or express it on its own very easily, why would you want a separate field for it? Equally, the "it's easy to confuse ""
and " "
" arguments don't apply for '\0'
.
If you could give an example of where you'd want to use it and why you think it would be better, that might help...
How does one represent the empty char?
You can use c[i]= '\0'
or simply c[i] = (char) 0
.
The null/empty char is simply a value of zero, but can also be represented as a character with an escaped zero.
Why is there no empty char literal?
To give a slightly more technical explanation: There is no character that can serve as the identity element when performing concatenation. This is different from integers, where 0
serves as the identity element for addition.
How to replace a char in string with an Empty character in C#.NET
You can use a different overload of Replace()
that takes string.
val = val.Replace("-", string.Empty)
In java i tried replace char with ''. But it's showing Empty Literal Character error
You can't have a character representing nothing. You need a character sequence of length zero, i.e. an empty string.
As such, your first argument also needs to be converted to use the String, String
signature.
name = name.replace(Character.toString(name.charAt(i)), "");
String.Split(), empty strings and method deleting specified characters
string.Split()
method:
" ".Split();
will result in an array with 2 string.Empty
items as there is nothing (empty) on either side of the space character.
" something".Split();
and "something ".Split();
will result in an array with two items, that one of them is an empty string, and actually one side of the space character is empty.
"a b".Split(); //double space in between
The first space has a
on the left side and an empty string on the right side (the right side is empty because there is another delimiter right after), the second space, has an empty string on the left side and b
on the right side. so the result will be:
{"a","","","b"}
Copying a string into an empty string without using a lib function
You're found out why C++ is so much easier, with std::string
. Doing this manually, the old-fashioned way is fraught with dangers. The new way is just stack = p;
Literally, it's that simple.
stack
is not an "empty string" in your code. It's a char[1]
. You cannot copy any characters into it, because that one char is needed to hold the \0
. C arrays, unlike std::string
have a fixed length.
Related Topics
How to Get and Set the Window Position of Another Application in C#
Finding All References to a Method with Roslyn
How to Restart a Wpf Application
What Are the Downsides to Turning Off Proxycreationenabled for Ctp5 of Ef Code First
Differencebetween Preservereferenceshandling and Referenceloophandling in JSON.Net
C# Console Receive Input with Pipe
Excel to Datatable Using Epplus - Excel Locked for Editing
Resizing an Image in ASP.NET Without Losing the Image Quality
"Could Not Load Type [Namespace].Global" Causing Me Grief
Linq to Entities Only Supports Casting Edm Primitive or Enumeration Types with Ientity Interface
Visual Studio Debugging "Quick Watch" Tool and Lambda Expressions
Hashtable with Multidimensional Key in C#
What Is the Algorithm to Convert an Excel Column Letter into Its Number
How to Run a .Net Console Application in the Background
Why We Need Thread.Memorybarrier()
Windows.Forms.Timer or System.Threading.Timer
"Updatesourcetrigger=Propertychanged" Equivalent for a Windows Phone 7 Textbox