Consistently using the &
operator for string concatenation make the developer intentions clear.
&
, unlike +
, will convert its operands to strings and perform an actual concatenation.
+
on the other hand can be an addition, or a concatenation, depending on the operand types.
Noncompliant code example
Module Module1
Sub Main()
Console.WriteLine("1" + 2) ' Noncompliant - will display "3"
End Sub
End Module
Compliant solution
Module Module1
Sub Main()
Console.WriteLine(1 & 2) ' Compliant - will display "12"
Console.WriteLine(1 + 2) ' Compliant - but will display "3"
Console.WriteLine("1" & 2) ' Compliant - will display "12"
End Sub
End Module