Should const be public?

Should const be public?

A variable declared as const must be assigned a value at declaration, and this value may not then change at a later time. public const string ConnectionString = “YourConnectionString”; You want to use const when you have a variable whose value will not change, ever, during the time your application is being used. …

Why you should use constants?

Constants provide some level of guarantee that code can’t change the underlying value. This is not of much importance for a smaller project, but matters on a larger project with multiple components written by multiple authors. Constants also provide a strong hint to the compiler for optimization.

What is the benefit of using constants instead of normal variables?

The only benefit of a const local variable is that the value cannot be reassigned.

Can constants be private?

PHP 7.1 added another cool feature for class constants: we can finally make them private!

Is readonly static?

A readonly field can be initialized either at the time of declaration or within the constructor of the same class. Therefore, readonly fields can be used for run-time constants. Explicitly, you can specify a readonly field as static since like constant by default it is not static.

What are the benefits of declaring names of constants?

Constants can make your program more readable. For example, you can declare: Const PI = 3.141592654. Then, within the body of your program, you can make calculations that have something to do with a circle. Constants can make your program more readable.

Should constants be private or public?

Just stick with public constant. The idea behind encapsulation is to protect unwanted changes of a variable and hide the internal representation. With constants it doesn’t make much sense.

What is difference between const and static?

The static keyword is used for defining static properties and methods in a javascript class program. The const keyword is used for defining constant value for a variable. The const variable is used for declaring a constant or fixed value whose value cannot be changed.

What are the main differences between static and readonly?

C# Readonly vs Static Readonly:

Readonly in C#	Static Readonly in C#
Can be assigned at the time of declaration or constructor	Can be assigned at the time of declaration or static constructor
Value may be different depending upon the constructor used	Value will be constant after the initialization

Why are public constants bad in C #?

In C# it’s very bad for none of the reasons mentioned in this thread. Public constants in C# get baked into referencing assemblies. Meaning, if you have a SomeOtherClass in a separate assembly referencing SomeString in MyClass, the CIL generated for SomeOtherClass will contain a hardcoded “SomeValue” string.

When to keep a const as a public const?

When it comes to a const this is not normally an issue (similarly to public enumerations) – unless you think that the const will end up as mutable and that you will require encapsulation around the accessor at some time (say to log how many times it was looked up), you might as well keep it as a public const. A constant is data.

Why are constants declared to be public in Java?

There is a certain amount of opinion to answer this. To start with, constants in java are generally declared to be public, static and final. Below are the reasons: public, so that they are accessible from everywhere static, so that they can be accessed without any instance.

Which is the worst example of constant usage?

The same constant is then used in several places in the program to mean True, Deleted, Empty and Used up. I think this is worst example of constant usage. Though using a literals in multiple places is not the best practice, I would argue that literal usage is the lesser of two evils.