Comparisons with boxed value types
suggest changeIf value types are assigned to variables of type object
they are boxed - the value is stored in an instance of a System.Object
. This can lead to unintended consequences when comparing values with ==
, e.g.:
object left = (int)1; // int in an object box
object right = (int)1; // int in an object box
var comparison1 = left == right; // false
This can be avoided by using the overloaded Equals
method, which will give the expected result.
var comparison2 = left.Equals(right); // true
Alternatively, the same could be done by unboxing the left
and right
variables so that the int
values are compared:
var comparison3 = (int)left == (int)right; // true
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