org.sonar.plugins.csharp.S3962.html Maven / Gradle / Ivy
Why is this an issue?
The value of a static readonly field is computed at runtime while the value of a const field is calculated at compile
time, which improves performance.
This rule raises an issue when a static readonly field is initialized with a value that is computable at compile time.
As specified by Microsoft, the list of types that can have a constant value are:
C# type
.Net Fwk type
bool
System.Boolean
byte
System.Byte
sbyte
System.SByte
char
System.Char
decimal
System.Decimal
double
System.Double
float
System.Single
int
System.Int32
uint
System.UInt32
long
System.Int64
ulong
System.UInt64
short
System.Int16
ushort
System.UInt16
string
System.String
Noncompliant code example
namespace myLib
{
public class Foo
{
static readonly int x = 1; // Noncompliant
static readonly int y = x + 4; // Noncompliant
static readonly string s = "Bar"; // Noncompliant
}
}
Compliant solution
namespace myLib
{
public class Foo
{
const int x = 1;
const int y = x + 4;
const string s = "Bar";
}
}