logo
Tags down

shadow

Do sealed classes really offer performance Benefits?


By : user72187
Date : July 28 2020, 04:00 PM
I hope this helps you . The JITter will sometimes use non-virtual calls to methods in sealed classes since there is no way they can be extended further.
There are complex rules regarding calling type, virtual/nonvirtual, and I don't know them all so I can't really outline them for you, but if you google for sealed classes and virtual methods you might find some articles on the topic.
code :


Share : facebook icon twitter icon

Does making a class NotInheritable in VB.NET offer the same (potential) compiler optimizations as sealed in C#?


By : user1677108
Date : March 29 2020, 07:55 AM
like below fixes the issue Yes, the generated IL for sealed in C# is identical to NotInheritable in VB.NET and those potential optimizations will be done by the JIT compiler which will happen regardless of the original language.

C++: what benefits do string streams offer?


By : Korben Dallas
Date : March 29 2020, 07:55 AM
this one helps. You can use string streams to convert anything that implements operator << to a string:
code :
#include <sstream>

template<typename T>
std::string toString(const T& t)
{
  std::ostringstream stream;
  stream << t;

  return stream.str();
}
template <typename U, typename T>
U convert(const T& t)
{
  std::stringstream stream;
  stream << t;

  U u;
  stream >> u;

  return u;
}

What is the Performance impact of Sealed Classes in the context of Android?


By : Ejun Regio
Date : March 29 2020, 07:55 AM
may help you . The advice to stay away from enum on Android is exaggerated. Avoiding enums makes sense for the Android APIs: they heavily use special constants, there are very many of those objects live in an application, and they are performance-critical.
Your custom application code would probably want to use just a few enums to express entities from business logic. Creating a dozen, or even a few hundred, enum instances will leave an imperceptible footprint.

Benefits of declaring a sealed class as object


By : user3520533
Date : March 29 2020, 07:55 AM
To fix the issue you can do First of all let me explain what is the purpose of sealed classes. The very first sentences in the official documentation say:
code :
enum class Type(val value: String) {
    A("a"),
    B("b")
}
sealed class Type(val value: String) {
    object A : Type("a")
    object B : Type("b")
}
sealed class ApiReponse

data class Success(val data: Data) : ApiResponse()
object Error : ApiResponse()

fun getResponse(): ApiResponse {
    ...
    return if (apiCall.isSuccessful) Success(apiCall.data) else Error
}

How does heavy usage of static classes and methods offer better performance?


By : Emmeke van Elven
Date : March 29 2020, 07:55 AM
this one helps. Using static methods and classes has two effects.
Fewer null checks because a static method invocation does not require a null check on the receiver. Fewer allocations which leads to less memory pressure and time spent in GC.
shadow
Privacy Policy - Terms - Contact Us © voile276.org