Error in Xcode “invalid redeclaration of str, how to fix or what is the reason?

Question

Swift

Hello, I apologize in advance for the stupid question.

I study quietly Xcode, I take one course on YouTube.

The presenter has an expression

var str = "text"

However, I get an error invalid redeclaration of str

What could be the problem?

If you write var str1 - there is no error, but as I understand it correctly - the variable str1 is being assigned

Answer 1

you most likely declared a variable with the same name twice.
By declaring a variable I mean a construction of the form:var someName = ...

Answer 2

That's right, you are creating the "str" ​​variable at a time when you have already created this variable.
If you want to change the str variable, then you need to remove "var", because this keyword creates a variable
, or, if you still want to create a variable, then you need to specify a name that was not previously used in the code.