i was wondeiring that if Copy() and Clone() method do the same task whats diffrence between them and which one to use
as per what i have searched aboout is that clone() makes a new string and copy() just do copy an existing string and use it
if this is correct than which one is better
Don't use either method:
Clone doesn't actually do anything.Copy is officially obsolete.I'll preface my answer by saying that because String values are immutable there aren't really many (or any?) good reasons for using either String.Clone() or String.Copy.
as per what i have searched aboout is that
clone()makes a new string andcopy()just do copy an existing string and use it
Sorry but your understanding is incorrect.
As per the documentation (emphasis mine):
String.Clone() does not create a copy of the string, in fact it just returns a self-reference:
https://docs.microsoft.com/en-us/dotnet/api/system.string.clone?view=net-6.0
The return value is not an independent copy of this instance; it is simply another view of the same data. Use the
CopyorCopyTomethod to create a separate String object with the same value as this instance.Because the
Clonemethod simply returns the existing string instance, there is little reason to call it directly.
As for String.Copy():
https://docs.microsoft.com/en-us/dotnet/api/system.string.copy?view=net-6.0
The
Copymethod returns aStringobject that has the same value as the original string but represents a different object reference.[...]
Starting with .NET Core 3.0, this method is obsolete. However, we do not recommend its use in any .NET implementation. In particular, because of changes in string interning in .NET Core 3.0, in some cases the Copy method will not create a new string but will simply return a reference to an existing interned string.
Additionally, because String.Copy might create a copy (depending on how interning works)_ it means it's a O(n) operation.