Is it worth saving the result of the typeof() call for multiple uses?

Question

If I am to use the result of the C# typeof call on the same type, is it worth saving the value, or just call typeof() multiple times. To me, multiple typeof's are preferable as it can more concise, readable code. I guess it depends on whether the compiler would 'inline' the code?

Answer 1

No, typeof() is a compile-time keyword.

There could be a small benefit in keeping result of object.GetType() in a Type variable.

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Update

Type t = typeof(string);

This is what this line is compiled to

IL_0000:  nop
  IL_0001:  ldtoken    [mscorlib]System.String
  IL_0006:  call       class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle(valuetype [mscorlib]System.RuntimeTypeHandle)
  IL_000b:  stloc.0
  IL_000c:  ldloc.0

So internally, it will use GetTypeFromHandle which I imagine handle here is a pointer to the location of type in the heap.

So there can be a tiny little benefit in calling it once and keeping the reference, although will be minuscule.