Is it better to declare a variable inside or outside a loop?

Question

Is better do:

variable1Type foo; 
variable2Type baa; 

foreach(var val in list) 
{
    foo = new Foo( ... ); 
    foo.x = FormatValue(val); 

    baa = new B         


        

Answer 1

In JS the memory allocation is whole eachtime, In C#, there is no such difference usually, but if the local variable is captured by an anonymous method like lambda expression it will matter.